Why might someone choose to engage in fasted training?

Engaging in fasted training is often chosen to enhance fat oxidation. When a person trains in a fasted state, typically after an overnight fast, the body has depleted its glycogen stores, which are the primary energy source derived from carbohydrates. With lower glycogen availability, the body is more likely to utilize fat stores for energy during exercise. This shift can lead to greater fat oxidation, as the body adapts to using fat as its primary fuel source when carbohydrates are scarce.

This approach is popular among those looking to improve body composition or enhance metabolic flexibility, as it may facilitate the body’s ability to switch between using carbohydrates and fats more efficiently. Additionally, some individuals believe that fasted training can improve insulin sensitivity and potentially lead to adaptations that support endurance performance.

The other options are less aligned with the rationale behind fasted training. While muscle mass can be influenced by various training and nutritional strategies, fasted training is typically not aimed at increasing muscle mass, as adequate nutrient timing and intake, particularly protein, are crucial for muscle growth. Hydration is also essential for performance but is not inherently improved by training in a fasted state. Lastly, fasted training inherently does not boost carbohydrate intake; in fact, it often involves a decrease in available