Summer Heat: Feel Your Best with Water (cont.)
"If you don't replenish your fluid losses during exercise, you will fatigue early, and your performance will be diminished," says Kleiner. "If you don't replenish fluid after exercise, your performance on successive days will decay, and your long-term health may be at risk."
According to the National Athletic Trainers' Association, says Kleiner, dehydration can impair your physical performance after less than an hour of exercise -- even sooner if you start working out in a dehydrated state. It can also increase your risk of developing symptoms of heat illness, such as heat cramps, heat exhaustion, and heat stroke.
It's not just athletes -- even the weekend variety -- who are dehydrated, says Jacob Teitelbaum, MD, author of From Fatigued to Fantastic!: A Manual for Moving Beyond Chronic Fatigue and Fibromyalgia. For even the sedentary he suggests: "Simply occasionally pay attention to your mouth and lips. If they are dry, you're thirsty and need more water."
Dehydration can be a serious problem for anyone, but children and older adults are at greater risk, according to the Gatorade Sports Science Institute. It offers these tips to avoid dehydration:
Sugary sodas or even fruit juices are not the best ways to replace fluids. "Beverages with a high sugar content are actually dehydrating and should be avoided as a means of fluid replacement," says New York nutritionist Stuart Fischer, MD. That includes beer too, he points out.
If taste is an issue, Fischer recommends drinking flavored, zero-calorie mineral water, which mimics the taste of soda but contains no sugar.
California nutritionist Stella Metsovas likes to add mint or mint tea, lemon or lemon balm, or hibiscus tea to water to make it more "exciting," while fitness author Debbie Mandel recommends creating your own spa water by filling a pitcher with water, adding slices of fruit such as strawberry or peach, and refrigerating until the water is delicately fragranced and flavored.