Also known as "death by exposure", hypothermia is the lowering of the body's core temperature to a level of debilita-tion or death. It remains a top priority concern for all outdoor enthusiasts. Distinguish between acute (immersion) and chronic (exhaustion) hypothermia. Prevent hypothermia by understanding its physiological effects and by adapting to conditions. Assess, re-warm and treat a hypothermic victim in the field. Discover the fatal effects of after drop and prevent disaster on your next excursion. Understand nutritional requirements, heat loss, the shivering response and insulation factors.