Drink at least eight 8oz. glasses of water a day.
Thoreau said that water is the drink of the wise man. Water is fundamental to all life on earth. Our bodies are made up of 60% water. It is involved in every function in the body, including circulation, digestion, absorption of nutrients and the transmission of electrical currents in the body which control our nerves, muscles and hormones. Due to its importance in proper elimination and detoxification, I'm fond of saying "The solution to pollution is dilution," as water facilitates the elimination of waste products through urination, sweating, defecation, tears and mucus which line our respiratory and digestive tracts.
While we get water in many foods we eat and beverages we drink, pure water is often the best form to ingest. A recent study surveyed peoples' various aches and pains, energy levels and sense of well-being. When they were instructed to drink 8 glasses of water a day and their symptoms were reevaluated, notable improvements were seen in improved energy levels, fewer aches and pains, and generally improved sense of health. Adequate water is an extremely inexpensive and efficacious health practice.
Water quality is very important. In many areas of the country, tap water may contain lead, radon, nitrates and other potentially toxic chemicals. Additionally chlorine and chloramines are placed in municipal water to decontaminate it. Recently, San Francisco changed from using chlorine to using chloramine. Flouride in water supplies is a controversial topic with some studies suggesting health risks associated with fluoridation.
For these reasons, I recommend using clean sources of water and the use of solid carbon filters, such as Multi-Pure, or reverse osmosis filters. Avoid water that is in soft plastic containers, particularly in hot climates, as these can leach plastics into the water. Nalgene bottles are a good type for storing and transporting filtered water.