The only things I do is hold my breath for long periods of time. I do not gag myself with things, or hang myself. Most I've done is have my boyfriend choke me lightly...and I can stop him if I need to. So I am at no danger. I was just wondering if this is a something others do, really.
I don't find it to be a problem, really...though it does end up giving me headaches in the end.
