the guy in the first video used basic chemistry to perform a magic trick.
the guy in the video above is using hypnosis to make people believe he has special invisible powers.
tibetan buddhists can claim tumo keeps them warm all they want but does it prevent frostbite? who'd like to get out there in subzero conditions and show me?
study qi not to become an x-men reject but because it can help you focus your mind, which is more useful than any parlor trick.