JULIETTE DOUGLAS, CNN CORRESPONDENT (voice-over): With warm weather and sunny days, you may think there's nothing better than exercising outdoors. But according to the American Council on Exercise, summer's heat can raise your body's temperature as high as five degrees Fahrenheit above normal.</s>UNIDENTIFIED MALE: Some folks get nauseous, have body cramping. They'll get light-headedness, feel a sense of fatigue.</s>DOUGLAS: Here are some tips to help you enjoy summer and beat the heat before it beats you. Keep hydrated, drinking enough fluids, whether it's water or a sports drink, is imperative when exercising in hot or humid weather. To ensure the right balance, health experts suggest food replenishment before, during and after exercise. Aim for six to eight ounces of fluid for every 15 to 20 minutes of exercise. Watch exercise intensity. Start off slow and gradually build up as your body becomes accustomed to the heat. Work out during off-peak heat hours, get started early in the morning or try exercising in late afternoon after the temperature starts to drop. The right gear will also help beat the heat. Wear lightweight loose clothing and avoid dark colors, which absorb the sun's rays. Listen to your body. If you feel fatigued, continue your workout on another day. When you're done, chill out with a fruit smoothie. It will cool you down and count towards your daily recommended servings of fruit. For "Feeling Fit," I'm Juliette Douglas.
Feeling Fit: Summer Exercise Tips