1. Slow down. Your body can't do its best in high temperatures and humidities - and might do its worst.
2. Heed your body's early warnings that heat syndrome is on the way.Reduce your level of activity immediately, and get to a cooler environment.
3. Dress for summer. Lightweight, light-colored clothing reflects heat and sunlight, and helps your thermo-regulatory system maintain normal body temperature.
4. Put less fuel on your inner fires. Foods (like proteins) that increase metabolic heat production also increase water loss.
5. Don't dry out. Heat wave weather can wiring you out before you know it. Drink plenty of water while the hot spell lasts.
6. Stay "salty." Unless you're on a salt-restricted diet, take an occasional salt tablet or some salt solution when you've worked up a good sweat.
7. Avoid thermal shock. Acclimatize yourself gradually to warmer weather. Treat yourself extra gently for those first few critically hot days.
8. Vary your thermal environment. Physical stress icreases with exposure time in heat-wave weather. Try to get out of the heat for at least a few hours each day. If this can't be done at home, drop in on a cool store, restaurant, or theater - anything to keep your exposure time down.
9. Avoid too much sun. Sunburn makes the job of heat dissipation that much more difficult; besides, remember that sunburn is an actual burn injury to your skin.