Dress in loose-fitting clothes that cover as much skin as possible. Wear lightweight, light-colored clothing that reflects heat and sunlight and helps maintain normal body temperature. Protect face and head by wearing a wide-brimmed hat. Allow your body to get acclimated to hot temperatures for the first 2 or 3 days of a heat wave. Avoid too much sunshine.
Sunburn slows the skin's ability to cool itself.
Avoid extreme temperature changes. A cool shower immediately after coming in from hot temperatures can result in hypothermia, particularly for elderly and very young people. Reduce, eliminate, or reschedule strenuous activities. High-risk individuals should stay in cool places. Take salt tablets only if specified by your physician.