Back-country travel is not recommended due to frequent avalanches. Hypothermia Hypothermia is aggravated by wind, exhaustion, and being wet. Avoid wearing cotton next to your body, as cotton will soak up perspiration and cool your skin. Hypothermia is the number one killer of outdoor recreationists. Plan your meals to ensure a diet of high-energy foods.
Water is often difficult to find in winter.
All that is available may be what you carry in containers or melt from snow. The body looses as much as 2-4 quarts of liquid per day under exertion. Avoid melting snow by body contact. Travel equipped with proper implements to melt snow. Save your energy.