You should not stop exercising during the summer months, just because the mercury has jumped to uncomfortable heights. But you should take precautions to protect yourself against heat-related illness. The American Council on Exercise offers these guidelines:
* Drink plenty of water before, during and after exercise
* Do not exercise as vigorously as you normally do, especially during the first few days of hotter weather
* Pay attention to factors other than temperature, including humidity
* Exercise early in the morning or late in the evening, to beat the hottest temperatures
* Wear lightweight clothing that fits loosely
* Listen to your body and take a rest when you need it