The Index runs from 1 to 10 with 1 indicating exposure to UV rays. Dehydration occurs when a person loses excessive amounts of body fluids through perspiration, raising the body s temperature. Heat exhaustion occurs when a dehydrated person continues to exercise. Blood flow to the skin increases, causing a decreased blood flow to the vital organs. Heat stroke happens when the victim s temperature control system, which produces sweat to the cool body, stops working.
Body temperature can rise so high that it can cause brain damage.
Death can result if the body is not cooled quickly. Never leave children in a car during warm weather, even with the windows partially down. Colds generally last three to seven days, getting worse before they get better, but allergies can last from 10 days to weeks. A cold cannot be cured. Drink plenty of liquids and rest as much as possible.