Vitamins play a crucial role in athletic performance by supporting various bodily functions essential for energy production, muscle contraction, and recovery. For example, B vitamins are vital for converting food into energy, while vitamin D contributes to bone health and muscle function. Antioxidant vitamins like vitamin C and E help combat oxidative stress induced by intense workouts, reducing muscle soreness and enhancing recovery. A balanced intake of vitamins through diet or supplementation can optimize performance and health for athletes, thereby supporting training goals.