What is Carb Cycling and How Does it Work?

What-is-Carb-Cycling-and-How-Does-it-Work UXO Supplements

What is Carb Cycling and How Does it Work?

Carb cycling, a method involving alternating high, low, and moderate carbohydrate intake days, presents a multifaceted approach influencing energy levels, endurance, and training adaptations. In this overview, we'll touch upon various carb cycling strategies, considering research gaps and their implications on personal decision-making regarding nutrition.

Understanding Carb Cycling

Carbohydrates, serving as the primary energy source during training, are stored as glycogen in muscles and the liver. Intense endurance workouts predominantly rely on carbohydrates for fuel, while even resistance training can deplete glycogen stores. Manipulating glycogen levels pre, during, or post-exercise could induce varied training adaptations, leading to the concept of carb cycling.

Benefits of Carb Cycling

Carb cycling offers intriguing benefits supported by research. Training in a glycogen-depleted state seems to trigger the expression of genes promoting mitochondrial creation, potentially enhancing energy efficiency, fat oxidation, and endurance performance. This discovery has stimulated further exploration into optimizing endurance training and even considering its implications for general health.

Interestingly, adopting a carb cycling plan aligned with specific training strategies has shown promise in increasing fat loss compared to non-carb cycling diets. This is attributed to increased fat oxidation during exercise and enhanced mitochondrial density from low carb training.

Why Carb Cycling Works?

Contrary to conventional wisdom, training in a low-carb state might elevate workout stress levels. Most carb cycling strategies entail lower volume/intensity workouts in a low carb state. This method, while inducing a substantial training stimulus, avoids the exhaustive effects of high-volume workouts.

Methods of Carb Cycling

  1. Train High, Sleep Low, Train Low, Repeat: This intricate method involves alternating high and low volume days in a weekly cycle, manipulating carb intake accordingly. It's heavily researched in endurance sports but might demand volume fluctuations in training.

  2. Fuel for the Work Required: This adaptable approach aligns carb intake with the intensity of daily training. High-carb days support strenuous workouts, moderate days for less challenging sessions, and low-carb days for rest or lighter workouts.

  3. Two-a-Days: A method where a heavy session in the morning, followed by a lighter, carb-depleted session in the evening, seems to boost whole-body fat burning. This strategy, combined with adjusting carb intake, aligns with the "Fuel for the Work Required" concept.

Downsides and Considerations

The research on carb cycling primarily revolves around endurance training, raising questions about its direct applicability to strength athletes. Endurance athletes target different gains compared to strength athletes, though both can benefit from increased mitochondrial density and fat burning. However, employing carb cycling as a tool rather than a strict regimen seems prudent, considering potential drawbacks like reduced training stimulus due to glycogen depletion and increased susceptibility to illness.


While carb cycling offers promising benefits, particularly in fat loss and endurance training, its long-term implications and direct relevance to strength athletes require further study. Nutrition's intricate role in supporting training goals emphasizes the need for an individualized approach. Experimenting with carb cycling methods aligned with personal training plans could yield valuable insights into its effectiveness.

Ultimately, nutrition, like training, demands tailored strategies. Understanding how carb cycling aligns with your goals and adjusting based on personal response is key. Explore and experiment with these methods to discern what works best for your unique physiology and objectives.


Check out our Incindiary Stage 3 product. Designed to shuttle carbs from your 2 biggest meals daily to be stored as Glycogen "Muscle fuel" rather than fat. Put your carbs to work in overdrive!

Also . . .

Check out Fuel Point. Our fast gastric emptying carb product. If you go heavy on leg days and find yourself emptying out the tank. A fast digesting carb can make a world of difference. 

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