Move the victim to a cool place and soak his or her clothing with cool water. Prompt first aid can prevent permanent damage to the brain and other vital organs. Heat exhaustion results from loss of fluid through sweating, and occurs when a worker fails to drink enough fluids or take in enough salt or both. People with heat exhaustion continue to sweat but experience weakness, fatigue, giddiness, nausea, or headache. The skin is often clammy and moist, the complexion pale or flushed, and the body temperature normal or slightly higher.
Treatment is usually simple.
The victim should rest in a cool place and drink an electrolyte solution such as Gatorade. Replace electrolytes by having some salt in your diet. If you are working where it is possible to set up a fan, the increased air movement cools the body. Pace yourself and take breaks when you feel you need them. Since general fitness also affects the body's ability to handle heat, regular exercise is a good idea.