Essential nutrients for athletes include carbohydrates, proteins, fats, vitamins, and minerals to support performance and recovery. Carbohydrates provide quick energy, while proteins aid in muscle repair and growth. Healthy fats are crucial for hormone production and overall energy. Additionally, vitamins and minerals play various roles in metabolic processes, immune function, and muscle contractions. A well-rounded diet ensures that athletes can perform at their best and recover effectively after intense training sessions.