Sergey Larin, guide of the 7 Summits Club: The group "1078", on July 17 at 7:25, climbed the highest point of Europe. We left by ratrak at 2: 00, and at 9:45 we already went down to the refuge. That is, it is proved that acclimatization when you sleep at the bottom, and during the day you go to a height, has the right to exist. However, it is worth noting that all the participants were physically prepared. Although only one participant has been at altitude before - on Aconcagua, and the second –f or the first time in the mountains.