Hiking for a long time in extremely cold weather without carrying warm items is very dangerous and undesirable behavior, which may cause severe frostbite and even life-threatening. It is not recommended to do so. However, if it is necessary to discuss due to certain special simulation scenarios or extreme assumptions, then the following temporary emergency measures can reduce the risk of temperature loss to a certain extent, but they are by no means conventional safety practices.： -**The use of body movement to produce heat**: By quickly and vigorously moving various parts of the body, such as quickly swinging your arms, raising your legs, jumping, etc., to accelerate blood circulation to generate heat, and try to maintain the body's core temperature. However, continuous high-intensity exercise consumes a lot of physical energy and is difficult to maintain for a long time. -**Find a shelter from the wind**: Try to hide on the leeward side of the mountain, behind large trees, etc., where the cold wind can directly blow, to reduce heat loss. But this can only play a certain role in alleviating, and cannot fundamentally solve the problem of warmth. -**Use natural shelter**: If there are dry grass, leaves, etc. nearby, it can be collected and covered on exposed parts of the body, such as legs, hands, etc., which can play a certain role in isolating cold air. Once again, it is emphasized that hiking in extremely cold weather must bring sufficient warm items, such as warm clothing, hats, gloves, warm shoes, sleeping bags, etc., to ensure one's own safety.