Sodium plays a crucial role in exercise-related health by aiding in electrolyte balance and fluid regulation during physical activity. It helps retain water in the body, ensuring optimal hydration and preventing dehydration during extended exercise sessions. Sodium is also essential for maintaining nerve function and muscle contractions. However, excessive sodium intake can lead to health issues like hypertension. Athletes should monitor their sodium intake, especially during intense training, to strike a balance that supports performance without compromising cardiovascular health.