The digestion process impacts physical performance by determining the energy available for exercise. When food is consumed, the body breaks it down into nutrients, primarily carbohydrates and proteins, which are vital for fueling workouts. However, poor timing and food choices can lead to discomfort and affect performance. For example, heavy or fatty meals can lead to sluggishness, while easy-to-digest carbohydrates provide quick energy. Thus, smart pre-exercise nutrition is crucial for optimizing athletic performance.