Water is your body's principal chemical component and makes up about 60 percent of your body weight. Every system in your body depends on water. Water regulates body temperatures, eliminates toxins, carries nutrients and oxygen to the cells, and provides a moist environment for body tissues and joints. An appropriate water and electrolyte balance are critical for the function of all body systems. Water provides the medium for biochemical reactions within cell tissues and is essential for maintaining an adequate blood volume and the integrity of the cardiovascular system. More: Measure Your Sweat Loss for Optimal Hydration According to the Institute of Medicine , 20 percent of your water intake comes from food sources. Many fruits and vegetables, such as watermelon, broccoli and tomatoes, contain 90 percent or higher water content by weight. It is important for athletes to be well-nourished and well-hydrated before going to a workout or competition. During exercise,...
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