How Dehydration Affects Your Heart Water Plays a vital role in maintaining health, but most individuals do not realize exactly the impact dehydration has on heart health. Whenever fluid loss exceeds fluid intake, whether through sweating, breathing, exercise, illness, or daily bodily functions, your body begins to face physiological challenges. https://www.behance.net/gallery/251664033/How-Dehydration-Affects-Your-Heart