Although water constitutes 55-60% of an average adult’s body weight, it’s much more in young adults: As we age, the amount of water in the body decreases. Many scientists see water as one of the most important factors in rejuvenation. Watch this short video to learn how water affects your body:

The amount of recommended daily intake of water varies in medical literature. But their common advice is that don’t wait for the thirst signal to drink water. According to The Institute of Medicine, 3 liters of liquid intake for men and 2.2 liter for women is the minimum daily requirement.