The Jesus wrote...
This actually used to be something that I was pretty much obsessed with. You'd be surprised at what people can do with chi, ki, or whatever you want to call it. From what I've read and heard there are rare instances of people being burned by energy attacks, but generally its kind of like getting hit by a strong wind cannon or something like that. With much stronger attacks there usually isn't much external damage, but there's a possibility that it could cause your internal organs to explode. It would take an extreme amount of concentration and an effort on the part of the attacker to accumulate that much energy though. Most people with that kind of discipline are usually nonviolent like monks, yogis, and other people of that sort. There are martial artists that can do that type of shit, but again, it takes a lot of discipline and a lot of work to even be able to use weak attacks. In the past when I've come anywhere near close, I've only managed to collect enough to warm my hands.
And this is why you shouldn't smoke pot kids.
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I believe in Ki/Chi 100%, I just never bothered to try it. I mean its the same as yelling when you are weight lifting/Breaking shit. Its mainly a concetration of your Mind, Body and Soul[/Thoughts]