Our bodies require water to digest and absorb food, eliminate waste, and regulate body temperature. When we don't drink enough water, we become dehydrated.
We are all aware of how important hydration is for a healthy body. As a general rule of thumb, a person can survive without water for about 3 days. However, some factors, such as how much water an individual body needs, and how it uses water, can affect this. (Source: Healthy heart)
Your hydrated body can pump blood more effectively when you drink more water than you lose, enabling your body's muscles to function more effectively.
Nutritionist suggests drinking 8 glasses of water every day.