Inadequate hydration adversely affects exercise performance by leading to decreased endurance, reduced strength, and impaired thermoregulation. Even mild dehydration can hinder physical output and cognitive function, impacting motivation and focus during workouts. Additionally, dehydration increases the risk of muscle cramps and heat-related illnesses, making it essential to maintain proper fluid intake, especially during intense activities. Staying adequately hydrated ensures optimal blood flow and nutrient delivery to muscles, thereby improving overall performance and helping individuals achieve their fitness goals.