Hypothermia is a medical condition that occurs when the body loses heat faster than it can produce heat and the core body temperature drops below 95°F. Early symptoms include shivering and loss of dexterity, and as it progresses untreated, it can lead to loss of consciousness, irregular heartbeat and respiratory failure. Proper prevention includes staying hydrated, eating, wearing appropriate insulating layers of clothing, and seeking shelter from wind and wetness. First aid involves moving to warmth, removing wet clothes, and warming the body core with blankets and warm drinks if conscious.