Which of the following nutrients is crucial during the refueling interval (RFI)?

During the refueling interval (RFI), carbohydrates and protein are essential nutrients for optimizing recovery and replenishing energy stores after exercise.

Carbohydrates are vital because they help replenish glycogen stores in the muscles and liver, which are depleted during physical activity. A sufficient intake of carbohydrates post-exercise ensures that the body can recover effectively and prepare for future physical exertion.

Protein, on the other hand, plays a critical role in muscle repair and growth. After intense workouts, muscle fibers can become damaged; protein provides the necessary amino acids to assist in repairing and building those muscle tissues.

Together, carbohydrates and protein work synergistically during this recovery phase to enhance performance, improve recovery time, and support overall physical health. This combination is particularly crucial for athletes or individuals engaging in strenuous activity, as it maximizes the body's ability to recover efficiently.