Wear loose-fitting clothing. Natural fibers, such as cotton, can be cooler than synthetics. Wear light-colored clothing that will reflect, rather than absorb, the heat. Wear a hat. Drink plenty of water to replenish body fluids lost through perspiration, which is the body's way of cooling itself.
Cool water passes through the stomach quickly, which makes it a good choice to re-hydrate the body.
Drink water before, during and after activity to maintain fluids, rather than wait until you are thirsty. Save chores like washing and drying clothes in the dryer for early morning or late evening hours when utility use is not at its peak. Limit unnecessary travel. Vehicles without a working air- conditioner pose the most concern, but any traveler can be caught unexpectedly with a breakdown. Carry a jug or cooler of water in the car or truck.