The primary source of energy for our body during exercise is glucose, which is derived from carbohydrates. As physical activity increases, the body utilizes glucose to supply energy to working muscles. This process is essential for sustaining performance during both aerobic (endurance) and anaerobic (strength) activities. The body can store glucose as glycogen in the liver and muscle cells for quick access during exercise. Ensuring adequate carbohydrate intake is crucial, especially for athletes or those engaging in regular high-intensity workouts, to maintain optimal energy levels and performance.