This is a vid of qigong demonstrations.
http://www.youtube.com/watch?v=-ZST7CE7v-M&mode=related&search=
At 7:22 he demonstrats hitting a bottle of wine and blowing the bottom of the bottle out. He is “sending his chi through the bottle to explode the bottom.” It’s like hitting an opponent and damaging their internals.
Uh. I saw a drunk fratboy do the same exact thing when I was in college. Since this trick requires mastery of chi, apparently my drunken friend is a master of chi.
It definitely has nothing to do with physics.
On a side note, the trick he performs at around 6:52 (breaking the bottle openers around his fingers)… OW!!! I thought he was gonna jam his fingers through the bottle at first.
And there’s a light body demo at the end. I’d never seen a light body demo before.
Do you think these people really believe they’re using qi? Or do you think they know they’re just putting on a show.