Hydration plays a vital role in cognitive function during physical exertion by maintaining optimal body temperature and preventing dehydration. Adequate fluid intake ensures that essential nutrients and oxygen are efficiently transported to the brain and muscles, enhancing overall performance. Dehydration can lead to decreased concentration, impaired decision-making, and reduced coordination, adversely affecting endurance and strength. Staying hydrated before, during, and after workouts is crucial for sustaining energy levels and cognitive functions. Therefore, promoting proper hydration practices can significantly improve both physical and mental performance during exercise.