It does this by creating a barrier that not only insulates, but also helps cool the body. Without water body temperatures would be too hot or cold, and you couldn t transport nutrients through the body. Hydration, this is an increase in fluid intake prior to a workout or event to delay dehydration, usually 15-30 minutes before activity. A loss greater than this can impair performance. Rehydration and replacement are the intake of water during or after an activity in order to combat dehydration.
Cool water is absorbed more rapidly.
If you do drink a sports drink, or a fruit drink, it should have no more the 15 to 18 grams of carbohydrates, per cup. Reading the label of whatever you are drinking can help when figuring out the carbohydrate content. Also stay away from caffeinated and alcoholic beverages because they are diuretics and can cause additional dehydration problems. Know your body weight before and after an activity. By following a few simple steps you can improve the quality of your exercise and activities.