What is Hypothermia? Hypothermia is a life-threatening medical emergency that occurs when your body loses heat faster than it can produce it, causing your internal "thermostat" to fail. The Danger Zone: While a normal body temperature is 98.6°F (37°C), clinical hypothermia begins when your core temperature drops below 95°F (35°C) . At this level, your heart, nervous system, and other organs cannot function normally, eventually leading to complete organ failure. Symptoms: Watch for the "Umbles" Hypothermia directly affects the brain's cognitive functions, often causing the victim to become confused or lose self-awareness. They may not even realize they are in danger. A helpful way to remember the warning signs is to watch for the "Umbles" : Stumbles: Loss of physical coordination and clumsiness. Mumbles: Slurred or hesitant speech. Fumbles: Slowed reaction times and drop...