That's a old party trick we used to do in high school. Have 3 or 4 people rub the palms (no mental or anything else in them) together until you got heat, over the head of anyone, and lifted with one or two fingers from the bottom. Even fat people went up fairly easily. Why I do not know, though some said it was the influence of Chi/Prana. Power of suggestion or maybe drinking or toking had something to do with it...who knew?