One of the biggest dangers at high altitudes is called altitude or mountain sickness, which can not only cause serious health problems, but also death. It arises due to poor oxygen supply to the body caused by the drop in air pressure with increasing altitude. It is therefore necessary to devote time to the so-called acclimatization during each trek or mountain climbing at high altitude. Proper acclimatization can eliminate some unpleasant effects of altitude sickness. Time devoted to acclimatization will reward you with higher probability that you will enjoy peak panoramas without headaches.