Don't use them when you are alone. Do not drink alcohol or beverages with caffeine, because they speed up fluid loss. Check with your doctor which medicines are safe for you to use. Do not bundle a baby in blankets or heavy clothing. Infants don't tolerate heat well because their sweat glands are not well developed.
Some people perspire more than others.
Those who do should drink as much fluid as they can during hot, humid days. Know the signs of heat stroke and heat exhaustion and don't ignore them. Do CPR if the person is not breathing and has no pulse. Do rescue breathing if the person is not breathing but does have a pulse. Before Emergency Care under Self-Care Tips below.