These are important and must be replaced. Drink fruit juice or a sports beverage. Do not take salt tablets unless directed by your doctor. If you are on a low-salt diet, ask your doctor before changing what you eat or drink, especially before drinking a sports beverage. In the hot sun, a wide-brimmed hat will provide shade and keep your head cool.
Sunburn affects the body's ability to cool itself and causes a loss of body fluids.
It also causes pain and skin damage. If your home is not air-conditioned, consider spending a few hours in a local shopping mall or public library. Have a friend check on you at least twice a day during a heat wave.