Dehydration can negatively impact your organs and bodily functions, including your heart and cardiovascular system. When the temperatures rise, keeping the body hydrated helps the ticker more easily pump blood through the blood vessels to the muscles, and helps the muscles work efficiently. If you’re well hydrated, your heart doesn’t have to work as hard because when you are dehydrated the amount of blood circulating through your body decreases, and your heart beats faster to make up for that which increases the heart rate and blood pressure. Moreover, dehydration causes your blood to retain more sodium, thus thickening your blood and making it tougher for your blood to circulate through the body. Keeping your body hydrated eases the pumping action of the heart, thus allowing oxygen to reach your muscles, helping the muscles function well. Older adults, people with chronic illnesses, children and athletes are most at risk for dehydration, which is quite a serious condition, and...