Lack of body sweat is yet another sign of inadequate water intake. Drinking a large amount of water allows the body to sweat more, which warms the body up faster. Sweating, too, is the bodys natural way of dissipating heat. The general rule for an active person is to ingest 1 quart of water for every 1000 calories consumed. Keep in mind that hydration cannot be accomplished through caffeinated beverages.
Caffeine is a diuretic, which puts stress on the kidneys.
This in turn causes increased urination, which can lead to a depletion of electrolytes. Water not only transports nutrients to and from working muscles, it also helps eliminate waste products from the body. Through metabolic activity, the body generates toxins daily. Water acts as a catalyst for the kidneys to flush the toxins out. This process is not as efficient when the water is combined with other substances, such as juices.