Our bodies are made up of 60% water. We need water to assist in digestion, saliva formation, absorption, circulation, transportation of nutrients, and maintenance of body temperature to name a few. Most people today are not drinking enough water. A lot of water is lost from our body through sweating, urination, stool, and breathing.
Some of the signs of dehydration are muscle fatigue, constipation, dry skin, dry mouth, dizziness, lightheadedness, headache, decrease urination, and thirst.
The RDA for water is approximately half your body weight in ounces. For example, if the person weighes 120 pounds, he or she should be drinking 60 ounces/day. Also, keep in mind that a cup of coffee/tea depletes your body from two cups of water. Below are a couple of great links discussing the importance of drinking water: