In mountaineering, it refers to mountain climbing activities that increase adaptability. When climbing high mountains above 6,000 meters above sea level, due to the high altitude difference, various human bodies cannot immediately adapt to the environment of high altitude and oxygen, and it is difficult to climb from the base camp to the top. In general, more methods are used to adapt to the increase. For example, starting from a base camp of 4,000-5,000 meters, after several marches to a height of 6,000--7,000 meters and a certain degree of adaptation, it will be raised from the base camp to more than 8,000 meters to adapt to the extremely high altitude. Highly oxygen-free environment.

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