Hiking for a long time in extremely cold weather without carrying warm items is extremely dangerous and not recommended. Extremely cold environments can cause hypothermia (hypothermia), frostbite, and even life-threatening. If you do need to hike in extremely cold environments, the following are some suggestions, but please make sure you have sufficient warm equipment and emergency measures.： ### 1. **Understand the environment and weather** -**Weather forecast**: Check the weather forecast in advance to understand the temperature, wind speed and snowfall. -**Route planning**: Choose a familiar and safe route to avoid venturing into unknown areas in extreme weather. ### 2. **Reasonable dress** -**Layered dressing**: Although you do not bring extra warm items, it is important to wear appropriate clothing. Adopt layered dressing methods, including： -**Basic layer**: Moisture-wicking underwear to keep the skin dry. -**Middle layer**: A warm layer, such as wool or fleece clothing, helps maintain body temperature. -**Outer layer**: windproof and waterproof clothing to prevent wind chill effects and moisture intrusion. -**Protect the limbs**: Wear hats, gloves, scarves and warm socks, because these parts are prone to temperature loss. ### 3. **Maintain physical activity** -**Continuous exercise**: Generate heat through continuous exercise to avoid standing still for a long time. -**Moderate rest**: Choose a sheltered place when resting and minimize the time exposed to the cold wind. ### 4. **Take advantage of the natural environment** -**Find shelter**: Use natural terrain, such as rocks, trees or snowdrifts, as temporary shelters to reduce wind chill. -**Make a fire to keep warm**: If conditions permit, make a fire to provide additional heat. But pay attention to safety and avoid starting a fire. ### 5. **Keep the body hydrated and energetic** -**Replenish water**: In extremely cold environments, the body will still lose water, so it is very important to maintain water intake. -**High-calorie foods**: Bring high-calorie foods such as nuts, chocolate or energy bars to help maintain body temperature and energy levels. ### 6. **Emergency response measures** -**Distress signal**: Carry a whistle, mirror and other distress tools to send a signal in case of emergency. -**Emergency plan**: Inform others of your hiking plan, including the route and estimated return time, so that they can be rescued in time in the event of an accident. ### 7. **Mental preparation** -**Stay calm**: In extreme environments, it is essential to maintain a calm and positive attitude to avoid panic and excessive physical exertion. ### Important reminder： Although the above recommendations can help you hike in extremely cold environments to a certain extent, the practice of not carrying warm items is extremely dangerous. In extremely cold weather, the risk of hypothermia and frostbite is extremely high, and any negligence can lead to serious consequences. **It is strongly recommended**To bring enough warm items such as spare clothing, sleeping bags, heat sources (such as warming your baby), etc. when hiking in extremely cold environments, and to ensure that you have the ability to deal with emergencies. **Safety always comes first**, don't take risks for extremely cold hiking activities that are not fully prepared.