Last week I wrote an introductory article about tennis and sun. This article specifically focuses on hydration. Hydration is important! Your body depends on water to survive. Every cell, tissue, and organ in your body needs water to work properly. For example, your body uses water to maintain its temperature, remove waste, and lubricate your joints. Water is necessary for overall good health. (1) Dehydration of as little as 1-2 percent of body weight (only 1.5-3 pounds for a 150 lb. athlete) reduces performance. Dehydration of 3 percent or more of body weight increases a tennis player’s risk of heat-related illness (heat cramps, heat exhaustion, or heat stroke). For every percent of body weight lost during play, an athlete’s core body temperature can rise by 0.5 F. This results in the athlete’s heart working harder by 3-7 beats per minute at the same work rate. (2) SIGNS OF DEHYDRATION (3) Not only do you lose water wh...
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