Which macronutrient should be consumed before training to support glycogen stores?

Which macronutrient should be consumed before training to support glycogen stores?

• A. Protein
• B. Carbohydrates
• C. Fats
• D. Fiber

Answer: (B)

Carbohydrates are stored as glycogen in the liver and skeletal muscles, so consuming them before training helps top off these stores and provides readily available glucose for the working muscles. This supports maintaining energy during exercise, especially at higher intensities, and helps delay fatigue. Fat takes longer to digest and isn’t used to quickly refill glycogen, while protein mainly provides amino acids for repair and has little immediate impact on glycogen. Fiber isn’t a source of readily usable energy and can cause GI distress if eaten close to training.

Carbohydrates are stored as glycogen in the liver and skeletal muscles, so consuming them before training helps top off these stores and provides readily available glucose for the working muscles. This supports maintaining energy during exercise, especially at higher intensities, and helps delay fatigue. Fat takes longer to digest and isn’t used to quickly refill glycogen, while protein mainly provides amino acids for repair and has little immediate impact on glycogen. Fiber isn’t a source of readily usable energy and can cause GI distress if eaten close to training.