extreme temperatures and altitudes

signs and symptoms of altitude sickness

shortness of breath and headache lightheadedness and nausea

signs and symptoms of heat exhaustion

weak rapid pulse low blood pressure and headache nausea dizziness general weakness pale sweating and cold clammy skin

signs and symptoms of heat stroke

hot dry skin bright red skin color rapid strong pulse labored breathing elevated body temp

tips for exercising in the cold

wear breathable several layers of clothing or remove as needed replace body fluids and monitor body weight

appropriate response for heat exhaustion

stop exercising move to a cool ventilated area lie down elevated feet 12-18 inches give fluids monitor temperature

appropriate response for heat stroke

stop exercising remove as much clothing as feasible cool the body any give fluids and transport to er asap