Day Four of The Muscle Professor Academy touches on the topic of Keto-adaptation. Being Keto-adapted leads to different benefits for athletes
What does it mean to be keto-adapted? Keto adaptation occurs when your body switches from carbohydrates to fat and ketones as its primary source of fuel. This means that instead of carbohydrates, specifically glucose, feeding the body fat is broken down into alternative fuel sources to replace the need for carbohydrates.
In this study we see that athletes that are keto-adapted have a much higher fat utilization than athletes that are adapted to a higher carbohydrate diet. This is beneficial because carbohydrate storage (glycogen) may be depleted much quicker than fat storage. Therefore, athletes that are adapted to using fat as fuel have the ability to perform exercise for much longer without needing to refuel as frequently.
Volek, Jeff S., et al. “Metabolic characteristics of keto-adapted ultra-endurance runners.” Metabolism 65.3 (2016): 100-110.