Carb cycling: Is this advanced fat loss strategy right for YOU? (Take the quiz.)

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What is carb cycling? | Potential benefits | Quiz: Will carb cycling work for you? | Carb cycling plans

There’s a reason carb cycling is so popular.

According to people who are most enthusiastic about this method (often very fit-looking folks), it’s the perfect diet. They say carb cycling can help you:

  • Get the accelerated fat loss that comes from a low-calorie, low-carbohydrate diet… while still eating carbs and… without sacrificing exercise performance.
  • Avoid frustrating fat loss plateaus by better regulating hormones like leptin and insulin.
  • Gain muscle without gaining much fat.

But are these claims true? And even if so, will they hold true for YOU?

This article is going to help you decide if you should give carb cycling a try, or if instead, you might get better results with other strategies first.

(Strategies that might be more effective—for you personally—and require a lot less effort.)

Before we get started, though, let’s get one thing out of the way: Here at Precision Nutrition, we’re neither pro-carb cycling nor anti-carb cycling.

We’re pro-sustainable results. 

So we’re here to help you learn:

  • What carb cycling is
  • How carb cycling works (and how well it works)
  • Whether or not carb cycling is the right strategy for YOU (we’ve got an interactive quiz with your name on it)
  • How to carb cycle (if you decide to go for it)
  • How to determine if your carb cycling plan is actually working—so you can get the results you really want

Now get ready: Your crash course in carb cycling starts now.

Want the most important carb cycling information at your fingertips?

Download our carb cycling PDF guide, which includes: 

  • A carb cycling cheat sheet for quick and easy reference
  • A pre-carb cycling assessment
  • A step-by-step plan for figuring out if it works for you

Carb cycling: Is this advanced fat loss strategy right for YOU? (Take the quiz.) 1

Want to get it right now? Download the PDF carb cycling guide here.

If you’re a coach, these will be great to use with clients. And if you’re trying carb cycling yourself, you’ll have the info you need at the ready.

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Okay, so what is carb cycling?

Carb cycling is when you fluctuate between eating low-carb foods and high-carb foods.

The most common carb cycling approach is to eat fewer carbohydrates on some days and more carbohydrates on other days.

People who carb cycle usually end up calorie cycling, too. This means they eat fewer calories on their “low-carb days” and more calories on their “high-carb days.”

For example, a typical carb cycling schedule might look like this:

  • Non-workout days: low carb, low calorie
  • Workout days: high carb, high calorie

But that’s not the only way to cycle your carbs. Some folks carb cycle within a single day.

So they’ll eat high-carb foods around their workout, but have low-carb foods the rest of the day.

Because a typical carb cycling schedule requires counting macros or hand portions—and a good amount of nutrition planning—we consider it an intermediate to advanced nutrition strategy. Read: It’s kind of a pain to do and can pretty challenging for most people to do well.

As a result, it tends to work best for those who are highly-motivated: amateur and elite athletes, bodybuilders, and people who are paid based on how they look and perform.

You might be wondering… 

Why focus only on carbs and not protein or fat?

First and foremost, varying your carbohydrate intake may have a positive impact on many important hormones (we’ll dig more into that in a minute).

Fluctuating your fat and protein intake, on the other hand, won’t affect hormones for the better.

There’s also this:

Not-so-great stuff can happen when you don’t get enough protein or fat.

For example, if your fat intake stays too low, your menstrual cycle might halt. And if your protein intake stays too low, you can lose muscle and experience mood swings.

You’re probably not interested in any of that, let’s just keep this conversation about carbs.

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Carb cycling: Is this advanced fat loss strategy right for YOU? (Take the quiz.) 2

 

What does carb cycling do, exactly?

In theory, it can do quite a few things. So we’ll give you a rundown of the top five potential benefits of carb cycling.

But before we do, it’s important to know: There’s hardly any human research on carb cycling.

Mostly, we have anecdotal reports about how carb cycling works, along with a few hypotheses based on biochemistry.

Those are valuable, but on a 1 to 10 scale of scientific confidence, carb cycling ranks closer to a 1 than a 10.

So keep that in mind when you hear or read claims about carb cycling.

Okay, enough with the disclaimers. Here’s what carb cycling might do.

#1: Carb cycling may help keep your metabolism humming during fat loss.

When you eat less—say, to lose fat—your body responds in a variety of ways. For example:

  • Your basal metabolic rate (BMR) drops
  • You expend less energy when you exercise
  • Your daily activity outside of workouts tends to decrease naturally (you move around less without even realizing it).

So as you lose weight, you have to continue reducing how much you eat in order to keep seeing results.

Example: Let’s say you start a 2,000 calorie a day diet and lose weight steadily for a while. Over time, you might find that stops working. So you might have to cut back to 1,800 calories to kickstart weight loss again.

This is called metabolic adaptation, and you can no doubt see why it’s a problem.

The more your metabolism adapts, the more you have to restrict your food intake.

As a result, the harder it’s going to be to achieve your goal—and maintain your weight loss down the road. (Learn more: Can eating too little actually damage your metabolism?)

But carb cycling proponents say the approach can prevent metabolic adaptation.

The rationale: Regularly mixing in high-carb, high-calorie days “jumpstarts” your metabolism and keeps it from adapting.

Again, there’s no strong evidence to support this claim, but it also hasn’t been refuted.

(By the way, metabolic adaptation is the same principle behind reverse dieting, another advanced nutrition strategy.)

#2: Carb cycling may help regulate hormones affected by fat loss.

Intense dieting can mess with your hormones. Specifically:

  • Leptin
  • Thyroid hormones
  • Reproductive hormones (testosterone and estrogen)

If you’re trying to lose fat, leptin’s a particular concern. (Even though thyroid hormones, testosterone, and estrogen seem to get all the press.)

Released by fat tissue, leptin plays a key role in hunger and metabolic adaptation.

The more body fat you have, the more leptin in your blood. Your brain uses leptin levels to make decisions about hunger, calorie intake, nutrient absorption, and energy use.1

That’s a lot of factors related to fat loss.

Now here’s where it gets interesting: When you reduce calorie intake, even just for a few days, leptin levels drop.2

This tells your brain you need to eat to prevent starvation.

The takeaway: Leptin is one of the reasons you feel so hungry when you consistently eat less. 

Leptin is also considered the “master controller” of other hormones, meaning that when leptin drops, so do thyroid and reproductive hormones.

Okay, so what does this have to do with carb cycling?

The idea is this: By periodically eating more calories from carbohydrates (known as “refeeding”), our leptin levels will temporarily rise.

Hypothetically, this would tell your brain that you’re well-fed, causing a temporary decrease in hunger and appetite.

And because of this little high-carb, high-calorie break, it might feel easier to stick to a lower calorie intake on low-carb days. Plus, you could be less likely to experience the negative effects of not having enough of other important hormones.

There’s some evidence for this, though it’s very limited. What’s more, the “refeeds” involved are usually longer than one day.3

Still, there may be very real psychological benefits.

When you’re generally eating lower-carb and lower-calorie, getting in a higher-carb, higher-calorie day on purpose can feel really good physically and mentally. (Who doesn’t love a “cheat” day?)

#3: Carb cycling may make it easier to stick to a low-carbohydrate diet.

Low-carb diets can be effective for fat loss, especially for people with type 2 diabetes and metabolic syndrome.4 (It should be noted, though, that they’re not necessarily more effective than low-fat, high-carbohydrate diets.5 6)

What counts as low carb? You might call any diet that provides fewer than 30 percent of your daily calories from carbs a “low-carb diet.” (Experts often debate the exact percentage here, with some saying it’s 20 percent and others saying it’s even less.)

The ketogenic diet, a popular form of low-carb eating, is more specific. It’s very low in carbs, and very high in fat (usually <10 percent carbohydrate and >60 percent fat).

(To understand more about the differences between keto and low carb, see: The ketogenic diet: everything you need to know.)

Though low-carb and ketogenic diets can be effective for fat loss, most people can’t stick with them over a longer period of time. (This also goes for any other kind of restrictive eating style.)

So it’s been suggested that alternating between lower-carb and higher-carb days may better help people maintain a lower-carb eating style—and their results—long-term. In the case of someone doing keto, this is referred to as a cyclical ketogenic diet.

You could think of it this way: You eat a ketogenic most of the time but have little mini-breaks—that last a day or two—where you can enjoy higher-carb meals.

#4: Carb cycling may support athletic performance on a low-carb diet.

The ketogenic diet is also sometimes used by athletes who want to be fat adapted. Being fat-adapted allows you to burn greater amounts of fat at higher exercise intensities, according to several studies.7 8 9

Burning more fat always sounds like a good thing, of course. But how might it help with exercise performance?

That deserves a little more explanation.

Here’s the background: To fuel long bouts of endurance exercise, your body normally relies heavily on carbohydrates stored in the form of glycogen.

Unfortunately, your body can only store so much glycogen at a time. So if you exercise long enough, you’ll run low on carbs and have to slow down.

That’s why endurance athletes usually consume 60 to 90 grams of carbohydrates per hour during competitions. It gives them more fuel so they can keep going hard.

This is where being fat-adapted may come in handy.

As many of us know all too well, it’s easy for your body to store lots of fat in the form of fat tissue.

Even very lean people have 15 times more energy available from stored fat than from stored carbohydrate.10

So if you become fat-adapted, your body relies more heavily on fat—instead of carbs—to fuel long endurance exercise.

That would mean you wouldn’t have to deal with the inconvenience (and potential GI distress) of consuming an energy gel every 90 minutes during a longer exercise session.11 Plus, it might make you less likely to “bonk.”

Some have even suggested being fat-adapted could help improve exercise performance and recovery, too, though this is debated by researchers.12

Now, keep in mind: All of the above is only referring to how a ketogenic (low-carb, high-fat) diet might benefit endurance performance.

So how does carb cycling fit in?

The idea is this: You get fat-adapted by eating a ketogenic diet for several days. But then you cycle in a couple of high-carb days.

These high-carb days allow you to max-out your glycogen stores. The hope is that you can do this without disrupting the hypothetical performance benefits of the ketogenic diet.

Combined, this could give you the best of both worlds: Lots of energy to burn, from both carbs and fat.

It’s important to note, though, that the evidence doesn’t currently support the performance benefits of a ketogenic diet on a wide scale.

So based on what we know now: For most people, adopting a cyclical ketogenic diet specifically because you want to perform better is most likely more trouble than it’s worth.

#5: Carb cycling may promote muscle gain without fat gain.

Fat gain almost always accompanies muscle growth.

But some carb cycling enthusiasts say the key to gaining muscle without gaining much fat is the hormone insulin.

Whenever you eat carbohydrates, your blood sugar rises, and insulin is released.

Insulin helps regular your blood sugar levels. It also plays a key role in muscle growth and glycogen storage.

The hypothesis goes:

  • If you eat high carb on days you resistance train, you can take advantage of insulin’s muscle-building and recovery properties
  • If you eat low carb on rest or conditioning workout days, you can simultaneously lose fat and improve insulin sensitivity, making the high-carb days even more effective

That’s the high-level version. But the reality? It’s a lot more complicated than that, and there aren’t any diet studies that support it.

(Learn more: The truth about carbs, insulin, and fat loss.)

So…

Remember: We’re not totally sure carb cycling works.

What are we more confident about?

The big rocks.

Imagine your time as a jar that can be filled with a finite number of rocks, pebbles, and grains of sand.

The big rocks are the eating and lifestyle practices most necessary to see results. (You can read more about these in our article on the 5 universal principles of good nutrition.)

The pebbles are things that’ll help but aren’t totally necessary.

The sand is purely “bonus” stuff. It may help, but it’s not crucial, and it won’t have a big impact.

Carb cycling is a sand habit.

Illustrations showing how different health and fitness habits, including carb cycling, impact body composition. Big rock habits make the most impact, pebble habits make a little impact, and sand habits (like carb cycling), make minimal impact.

Carb cycling might make a small difference, but it doesn’t come close to big rock habits in terms of impact.

So… does carb cycling work?

If you mean, “Can carb cycling help me lose fat and improve body composition?”, the answer is yes. As long as, overall, you’re expending more calories than you’re consuming.

It might even work great for you, if it’s a good fit for your eating preferences and lifestyle.

But if you mean, “Is it superior to other methods?”, that’s hard to say. Because lack of evidence.

Our take: If it provides any incremental benefit, it’s minute. For most people, it’s a high effort, low impact deal.

(The key term here is most people. For example, if you’re an athlete with more than one competition in a day, nutrient timing is a whole lot more important.)

Who should try carb cycling?

Though carb cycling isn’t right for everyone, it can work for specific types of people.

You’re most likely to benefit from carb cycling if…

▶ You have your big rock habits down. 

You’re already eating lots of minimally-processed whole foods and little highly-processed fare. You’re exercising. You’re getting plenty of quality sleep. And you’re eating mindfully.

And because these big rocks are already in place, carb cycling becomes something to experiment with—instead of being the primary method of achieving results.

Since we aren’t 100 percent sure carb cycling works in all scenarios (in fact, not even close to 100 percent sure), this is an important box to check before getting started.

▶ You’re already very lean but want to get leaner. 

When you’ve already gotten super lean, your body will start to fight every last bit of fat loss. Cycling calorie and carb intake might help stave off the metabolic adaptation that often occurs with a chronic, ongoing calorie deficit.

Plus, cycling intake can make a calorie deficit feel like less of a grind. That’s because it lets you block off “eat less” days into small, manageable units instead of several weeks of miserable, hungry slogging.

▶ You want to manage training and nutritional stress (and are already implementing other key strategies).

If you’re concerned about how the stress of hard training and a chronic calorie deficit is affecting your hormones, you might consider carb cycling.

Provided you’re also doing other things to manage their total stress load—like sleeping enough, meditating, and practicing self-compassion—periodically “topping off” energy and carbohydrate stores can tell your body that everything’s okay, and starvation isn’t imminent. This is particularly useful for:

  • Women (whose central hormonal regulation systems may be very sensitive to nutritional deficits, which is one of the reasons intermittent fasting isn’t always so great for women)
  • Leaner people (who usually have less circulating leptin)
  • Anyone who doesn’t tolerate stress well or who already has a high stress load

▶ You’re trying to cut weight or change the appearance of your physique for competition.

Carbohydrate intake affects fluid balance in the body, which can impact both weight and appearance on competition or shoot day.

▶ You’re aiming for incremental gains. 

Let’s say you’re an advanced lifter. You’re already in great shape, and you’re pretty close to your genetic ceiling. Carb cycling might be the difference between you gaining one pound of muscle versus three pounds of muscle in a year. For an advanced lifter, that’s awesome progress.

But let’s say you’re a beginner lifter, and you’re just starting to make gains.

Carb cycling probably won’t make a big difference for you. And it might distract you from consistently implementing the big rocks that are going to push you forward.

In fact, it’d be smart to keep this strategy in your back pocket in case you need it later on, when you’re more advanced and no longer benefiting from newbie gains.

▶ You don’t tolerate carbs well. 

People with underlying metabolic issues (such as poor blood sugar control or elevated inflammation) may not feel great (think: bloated and tired) after eating large amounts of carbohydrates.

This group may nevertheless be able use carbs effectively when active. So they may benefit from getting the bulk of their carb intake around workouts.

(Even better, with time and sustained activity, they may become more metabolically healthy, which means improved overall carb tolerance and more dietary flexibility.)

▶ You have a solid handle on other aspects of their health. 

Changing your habits always comes at a cost. (This is something we cover in-depth in our article, The cost of getting lean).

For example, carb cycling might cause you to interact less socially because of stricter rules around mealtimes.

Or let’s say keeping track of how much and when you’re supposed to eat makes you feel stressed and overwhelmed. In that case, carb cycling could have a negative effect on your mental health.

For some people, these trade-offs may be worth it. For others, not so much. (We’ll help you figure out which category you fall into in the quiz below.)

▶ You find it an enjoyable way to eat. 

When it comes to nutrition, it’s what you do consistently that matters most.

And you’ll be much more likely to do what you enjoy. But if you hate an eating approach? It’s probably not going to last long.

So whether you carb cycle or eat low-carb, low-fat, Paleo, plant-based—it doesn’t really matter. If you can follow an eating style consistently, it fits the life you want to live, and you enjoy it, you’ll get results.

What about “carb cycling kickstart” challenges?

Usually, we don’t recommend carb cycling as a first step to better eating habits. 

That’s because popular carb-cycling challenges are often hyperspecific, requiring you to eat exactly five meals a day and adhere to precise macronutrient ratios.

Few people can stick to something like that for very long.

So is it likely that a 14-day carb cycling challenge will change your life forever?

Not really.

But it’s possible. 

We know that action leads to motivation. So if doing this kind of program helps you get motivated to take more steps to improve your nutrition habits, that’s awesome.

People who see early success with their nutrition efforts are more likely to continue making progress thanks to the motivation boost.

But if you choose this route, we’d like to offer one helpful nugget of advice: Have some sort of transition plan in place to help you get to a more sustainable eating pattern afterward.

Where to start? You can increase your chances of long-term success by picking out some “big rock” habits to focus on afterward.

Should YOU try carb cycling?

Let’s find out.

Use this handy quiz to determine if carb cycling makes sense for you.

1. Do you know what you hope to get out of carb cycling?
Consider: Do you want to lose fat? Gain muscle? Better regulate stress or your hormones?

No idea
100 percent clear

012345

2. Are you looking for a major body transformation or smaller incremental gains?
Consider: Is this the first step of your nutrition journey, or one of the last?

Transformation
Smaller gains

012345

3. Have you already tried less advanced strategies (example: eating more veggies) to accomplish your goal?
Consider: Is there anything less complex you could try first?

No previous steps
Tried everything else

012345

4. Are you already consistent and confident with your “big rock” habits?
Consider: Will you be able to keep up with your fundamental nutrition practices while you carb cycle?

Not consistent at all
Super confident

012345

5. How comfortable are you with rigid eating rules?
Consider: How do you feel about needing to eat exactly 5 meals or exactly 6 portions of lean protein each day, for example?

Flexibility is very important
I’m okay with rules for now

012345

6. Do you feel comfortable treating carb cycling as an experiment?
Consider: Are you okay trying carb cycling even if, ultimately, your experiment determines that this style of eating isn’t for you?

No, I need to be sure it’ll work
I’m all for experimenting

012345

7. Are you okay with making tradeoffs to follow a specific eating style?
Consider: How would carb cycling impact the way you eat at social gatherings or family meals? Are there foods you might have to skip out on that you normally enjoy?

Not okay
Totally comfortable

012345

8. Will following a super-specific eating plan stress you out?
Consider: Does the idea of not being able to “wing it” with your nutrition—in a restaurant or when you’re running low on groceries, for example—sound stressful?

Extremely stressful
I’m good with a specific plan

012345

 

Total score:

 

32-40: It’s a go!

Sounds like you’re in a great place to give carb cycling a try. You’re clear on your goals, your big rocks are in place, and you’re willing to make the tradeoffs.

24-31: Proceed with caution.

Carb cycling may or may not make sense for you. If you’d still like to give it a try, use outcome-based decision making (using the data you collect about your experience to decide what to do next) as you experiment with one of the protocols below.

Basically, that means checking in with yourself and being honest about how it’s going for you.

0-23: Consider keeping carb cycling in your back pocket. 

It looks like you’d benefit from less advanced nutrition and health practices. (That doesn’t mean you should never try carb cycling in the future.)

These fundamental practices include eating lean protein with meals, choosing minimally-processed whole foods most of the time, consuming several servings of colorful veggies each day, getting restful sleep, and reducing stress, among many others.

If you’re still interested in carb cycling after getting those big rock habits in place, retake this quiz, and see how you do.

How to carb cycle for fat loss or muscle gain

Here at Precision Nutrition, we use a variety of carb-cycling methods depending on a person’s goals and nutrition experience.

Below, we’ve outlined the two carb cycling methods we use most often. Before we dive in, though, let’s go over two key points.

1. Customize your carb cycling schedule. 

To adjust these carb cycling plans for your goals and body, you’ll want to use the Precision Nutrition Calculator. This will help you determine your baseline nutrition needs (in calories, macros, and/or hand portions).

Ultimately, no matter which cycling strategy you use, total calorie and macronutrient intake for the week should remain the same as if you’re not cycling.

For example, let’s say you’re looking to gain muscle, and the calculator determines you need a daily intake of:

  • 7 palms or 210 g protein
  • 6-8 fists of veggies
  • 8 handfuls or 250 g carbs; and
  • 7 thumbs or 100 g fats.

On a “typical” diet, that’s what you’d try to eat every day. To apply these numbers to carb cycling, start by multiplying the recommended daily carb intake by 7. That’s your total carb intake for the week.

Based on your carb cycling method, you’ll adjust your carb intake for a given meal or day. You’ll eat the same amount of carbs as you would without carb cycling, but distribute them a little differently throughout the day or week. Your fat and protein amounts will be the same every day. (Don’t worry: The complete directions are below.)

2. Treat carb cycling as an experiment.

As we covered above, carb cycling isn’t a super reliable method for getting results. That means it may or may not work for you.

And because carb cycling requires a decent amount of energy and attention, it’s important to treat it like an experiment until you understand how well it fits into your life.

We place a heavy emphasis on self-experimentation here at PN because it’s one of the best ways to find out what works for you as an individual. (Learn more about nutrition experiments here: 3 diet experiments that can change your eating habits—and transform your body.)

To set up your carb cycling experiment, consider:

  • What’s the goal you’re trying to achieve?
  • How will you know if you’re making progress? Will you measure your weight, body composition, girth measurements, exercise performance?
  • How often will you check in to determine whether you’re making progress or not?

We’d recommend using either of the methods below for at least two weeks before evaluating. Then, complete the carb cycling self-experimentation assessment below to see how things are going.

Carb cycling plan #1: Use high/low days.

This carb and calorie cycling approach is very simple and is based on your level of daily activity. Remember, first calculate your average daily needs using the Precision Nutrition Calculator. Then you’ll fluctuate your daily carb intake as follows.

  • On days with minimal physical activity: Eat mostly protein, vegetables, and healthy fats with minimal carbs (about 25-50 percent of your estimated daily carb need from the calculator, whether in grams or cupped handfuls).
  • On days with physical activity and/or planned exercise: Add starchy carbs to the baseline diet (about 150-175 percent of your estimated daily carb needs, whether in grams or cupped handfuls).

And that’s pretty much it.

To put this in context, let’s assume you were estimated to need an average of 8 handfuls or 250 g of carbs daily. On your days with minimal activity you’d aim for about 2-4 handfuls or 62-125 g of carbs. And on your days with lots of physical activity, you’d have about 12-14 handfuls or 375-435 g of carbs.

Carb cycling plan #2: Use post-workout/anytime meals.

Another approach is to put the bulk of a day’s carbohydrate intake in the meal that follows physical activity (post-workout), while minimizing carbohydrates at other meals (anytime).

For a visual of what a Post-workout (PW) or Anytime (AT) meal could look like, see below.

Illustrations showing two different types of meals you could use on a carb cycling schedule. An anytime meal has protein, veggies, and fats, and a post-workout meal has protein, veggies, fruit, and starches.

Alternating between Anytime and Post-Workout meals is a simpler approach to carb cycling.

An AT meal, as its name implies, can be eaten any time outside of exercise.

An AT meal:

  • Has serving of lean protein (about 1-2 palms, or as calculated)
  • Has a serving of healthy fats (about 2-3 thumbs, or as calculated)
  • Fills out the remainder with non-starchy vegetables (ideally colorful ones)

An AT meal can also include a small portion of high-fiber, slow-digesting carbohydrates, such as beans, lentils, or fruit (generally fewer than 25 percent of the total calories for that meal).

The PW plate is for meals that take place after physical activity. This meal type helps us take advantage of the body’s metabolic response to exercise, and the improved glucose tolerance that occurs during the post-exercise period (or any period following higher amounts of physical activity).

A PW meal:

  • Has a serving of lean protein (about 1-2 palms, or as calculated)
  • Is lower in healthy fats (about 0.5-1 thumb, or as calculated)
  • Has a large serving of carbohydrates (generally at least 50 percent or more of the calories for that meal, or about 3-5 cupped handfuls or as calculated)

On non-workout days choose one meal to be post-workout. Breakfast and dinner are the most common options.

Here’s a sample schedule:

Monday: workout dayTuesday: No workout but still physically activeWednesday: No workout and not physically active
Meal 1: AnytimeMeal 1: AnytimeMeal 1: Post-workout
WorkoutRide bike to work and work physically active job
Meal 2: Post-workoutMeal 2: Post-workoutMeal 2: Anytime
Meal 3: AnytimeMeal 3: Anytime (possibly Post-workout if extra calories needed)Meal 3: Anytime
Meal 4: AnytimeMeal 4: AnytimeMeal 4: Anytime

A quick note on advanced carb cycling methods

More advanced forms of carb cycling can be used by people like elite amateur and professional athletes, people whose income is tied to their appearance (like models), and bodybuilding and figure competitors.

If you’re a coach and you’re interested in learning more about these advanced protocols, we cover them in-depth in our Precision Nutrition Level 1 Certification.

If you’d like to try advanced carb cycling yourself, we’d recommend doing so with the assistance of a qualified nutrition coach.

Carb cycling: How’s it REALLY working for you?

After you’ve been carb cycling for at least 2 weeks, use this assessment to decide if the eating strategy is working for you.

Think about your recent experiences with carb cycling. Then, choose the number that best matches how strongly you agree with the following statements.

On a scale of 1 (never) to 10 (always), most of the time…

1. When I eat this way, I feel pretty good in general.

Never
Always

012345678910

2. Compared to how I was eating before, I feel better when carb cycling.

Never
Always

012345678910

3. When I carb cycle, I have reliable, sustained energy without crashing.

Never
Always

012345678910

4. Carb cycling feels doable, and fits into my everyday life.

Never
Always

012345678910

5. When I carb cycle, I feel good mentally and emotionally.

Never
Always

012345678910

6. I feel confident and capable cooking and preparing meals while carb cycling.

Never
Always

012345678910

7. When I carb cycle, I feel I am consistently keeping up with the other nutrition, fitness, and health practices that make me feel my best.

Never
Always

012345678910

8. When I carb cycle, I rarely struggle with food cravings or urges to overeat.

Never
Always

012345678910

9. When I carb cycle, I digest my food well.

Never
Always

012345678910

10. I’m performing and recovering well while carb cycling.

Never
Always

012345678910

11. On social occasions, such as going out with friends to a restaurant, I can almost always find something I enjoy and feel comfortable eating.

Never
Always

012345678910

12. I feel calm and relaxed about my food choices. It’s no big deal, just part of life.

Never
Always

012345678910

13. Even if other people pressure me to do something differently, or my style of eating doesn’t match others around me, I’m able to follow my own cues or goals.

Never
Always

012345678910

14. Carb cycling is helping me eat in a way that matches my specific goals for health, fitness, performance, etc.

Never
Always

012345678910

15. I feel I can still truly enjoy food, how it tastes, and the experience of eating.

Never
Always

012345678910

 

Total score:

 

120 and above: Crushing it!

This way of eating is working beautifully for you. Keep on doing your thing.

105 to 119: This is promising. 

Overall, things are going well with your carb cycling experiment. You might consider making some small changes, but it looks like you’re moving in the right direction.

76 to 104: Mixed results. 

Carb cycling might be working well for you in some areas, but you’re probably struggling in others. Consider if there are any tweaks you could make that would make it feel more sustainable.

Less than 75: Carb cycling is not working for you. 

Based on this assessment, you’re experiencing some issues with the carb cycling protocol you’re currently following. Success depends on a plan you can stick with consistently that has minimal tradeoffs.

And don’t feel bad about this. This experiment helped you to understand something important: Carb cycling may not be for you—at least, right now.

Carb cycling may or may not work for you.

No matter what happens during your carb cycling experiment, remember this: It’s all okay.

You might learn that you just can’t stick to a carb cycling regimen.

Or that you feel terrible when carb cycling.

Or maybe you feel great.

Or perhaps you learn that carb cycling is your favorite way of eating.

Or that it’s just not worth all the effort.

Or something else.

It’s all good.

The key is to keep an open mind and go with the best available evidence: your own personal experience (based on the assessment above).

Collect your data and then reflect on how things are going. If you stick to the facts, you can’t go wrong.

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References

Click here to view the information sources referenced in this article.

1. Pandit R, Beerens S, Adan RAH. Role of leptin in energy expenditure: the hypothalamic perspective. Am J Physiol Regul Integr Comp Physiol. 2017 Jun 1;312(6):R938–47.

2. Jenkins AB, Markovic TP, Fleury A, Campbell LV. Carbohydrate intake and short-term regulation of leptin in humans. Diabetologia. 1997 Mar;40(3):348–51.

3. Dirlewanger M, Vetta V di, Guenat E, Battilana P, Seematter G, Schneiter P, et al. Effects of short-term carbohydrate or fat overfeeding on energy expenditure and plasma leptin concentrations in healthy female subjects. Int J Obes. 2000 Nov 1;24(11):1413–8.

4. Kelly T, Unwin D, Finucane F. Low-Carbohydrate Diets in the Management of Obesity and Type 2 Diabetes: A Review from Clinicians Using the Approach in Practice. Int J Environ Res Public Health [Internet]. 2020 Apr 8;17(7). Available from: http://dx.doi.org/10.3390/ijerph17072557

5. Brouns F. Overweight and diabetes prevention: is a low-carbohydrate-high-fat diet recommendable? Eur J Nutr. 2018 Jun;57(4):1301–12.

6. Gardner CD, Trepanowski JF, Del Gobbo LC, Hauser ME, Rigdon J, Ioannidis JPA, et al. Effect of Low-Fat vs Low-Carbohydrate Diet on 12-Month Weight Loss in Overweight Adults and the Association With Genotype Pattern or Insulin Secretion: The DIETFITS Randomized Clinical Trial. JAMA. 2018 Feb 20;319(7):667–79.

7. Marquet L-A, Brisswalter J, Louis J, Tiollier E, Burke LM, Hawley JA, et al. Enhanced Endurance Performance by Periodization of Carbohydrate Intake: “Sleep Low” Strategy. Med Sci Sports Exerc. 2016 Apr;48(4):663–72.

8. Yeo WK, Paton CD, Garnham AP, Burke LM, Carey AL, Hawley JA. Skeletal muscle adaptation and performance responses to once a day versus twice every second day endurance training regimens. J Appl Physiol. 2008 Nov;105(5):1462–70.

9. Lane SC, Camera DM, Lassiter DG, Areta JL, Bird SR, Yeo WK, et al. Effects of sleeping with reduced carbohydrate availability on acute training responses. J Appl Physiol. 2015 Sep 15;119(6):643–55.

10. Volek JS, Noakes T, Phinney SD. Rethinking fat as a fuel for endurance exercise. EJSS. 2015;15(1):13–20.

11. Yeo WK, Carey AL, Burke L, Spriet LL, Hawley JA. Fat adaptation in well-trained athletes: effects on cell metabolism. Appl Physiol Nutr Metab. 2011 Feb;36(1):12–22.

12. Ma S, Huang Q, Tominaga T, Liu C, Suzuki K. An 8-Week Ketogenic Diet Alternated Interleukin-6, Ketolytic and Lipolytic Gene Expression, and Enhanced Exercise Capacity in Mice. Nutrients. 2018 Nov 7;10(11). Available from: http://dx.doi.org/10.3390/nu10111696

If you’re a coach, or you want to be…

Learning how to coach clients, patients, friends, or family members through healthy eating and lifestyle changes—in a way that’s personalized for their unique body, preferences, and circumstances—is both an art and a science.

If you’d like to learn more about both, consider the Precision Nutrition Level 1 Certification. The next group kicks off shortly.

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If you’re a coach, or you want to be…

Learning how to coach clients, patients, friends, or family members through healthy eating and lifestyle changes—in a way that’s personalized for their unique body, preferences, and circumstances—is both an art and a science.

If you’d like to learn more about both, consider the Precision Nutrition Level 1 Certification.

–>

 

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