You’ve probably seen personal trainers who walk around the gym with a full gallon of water. Though it looks like goofy overkill, maybe they are onto something. Water regulates the body’s temperature, cushions and protects vital organs, and aids the digestive system. Our blood is about 92% water, and the human body as a whole is about 70% water. It has been estimated that close to 75% of Americans live in a constant state of at least mild dehydration. Interestingly, even slight dehydration can reduce the metabolism by 3%, while your short-term memory and ability to focus are affected after just a 2% reduction in body water. Dr. Kenneth G. Berge of the Mayo clinic says, “Humans normally lose about ten cups of fluid a day in sweat, urine, exhaled air and bowel movements. What is lost must be replaced to maintain a fluid balance.” Remember that the use of caffeine, alcohol, and other dehydrators increases our need for water.