The water content of the body in adults and children is 60%, 70%, 90% in newborn babies, is 50% in the elderly. Age begins to take the place of water grows fat tissue. In this case, with advancing age, we need to consume more water. - Enhances your skin a drink of water. - Less water smokers fatigue, attention difficulties, memory impairment seen. - Water is involved in the regulation of body temperature. - Water consumption decreases, the amount of fat stored in the body begins to increase and weight gain takes place.