If air conditioning is not available, stay on the lowest floor, out of the sunshine. Remember, electric fans do not cool the air, but they do help sweat evaporate, which cools your body. Wear lightweight, light-colored clothing. Drink plenty of water regularly and often. Your body needs water to keep cool and to prevent heat cramps drink plenty of fluids even if you do not feel thirsty.
Water is the safest liquid to drink during heat emergencies.
Avoid drinks with caffeine in them. They can make you feel good briefly, but make the heat's effects on your body worse. Eat small meals and eat more often. Avoid foods that are high in protein, which increase metabolic heat. Avoid using salt tablets unless directed to do so by a physician.