The human body, which is made up of between 55 and 75 percent water (lean people have more water in their bodies because muscle holds more water than fat), is in need of constant water replenishment.
Your lungs expel between two and four cups of water each day through normal breathing - even more on a cold day. If your feet sweat, there goes another cup of water. If you make half a dozen trips to the bathroom during the day, that's six cups of water. If you perspire, you expel about two cups of water (which doesn't include exercise-induced perspiration).
A person would have to lose 10 percent of her body weight in fluids to be considered dehydrated, but as little as two percent can affect athletic performance, cause tiredness and dull critical thinking abilities. Adequate water consumption can help lessen the chance of kidney stones, keep joints lubricated, prevent and lessen the severity of colds and flu and help prevent constipation.
Health benefits of water
Water is crucial to your health. It makes up, on average, 60 percent of your body weight. Every system in your body depends on water.
Lack of water can lead to dehydration, a condition that occurs when you don't have enough water in your body to carry on normal functions. Even mild dehydration - as little as a 1 percent to 2 percent loss of your body weight - can sap your energy and make you tired. Dehydration poses a particular health risk for the very young and the very old. Signs and symptoms of dehydration include:
Excessive thirst Fatigue
Headache Dry mouth
Little or no urination Muscle weakness Dizziness
BENEFICIOS DE TOMAR AGUA
El cuerpo humano, esta compuesto de entre un 55% y 75% por ciento de agua (las personas delgadas tienen mas agua en su cuerpo porque los musculos tienen mas agua que grasa), esta en la necesidad de reponer el agua constantemente.