Ooh, I never knew that...
I play with myself mostly, I don't have a Dom, so a lot of what i do may be unsafe. I had no idea. Wow. I will be more careful next time.
The loss of blood-circulatory thing, does that apply to legs too? When i was younger and i did something really bad, my mother would punish me by having me kneel for hours in a corner of the room. I wasn't allowed to get up to use the bathroom or anything. I still do it every now and then, when i've been naughty online and i know Hubby wouldn't approve of whatever I've been chatting about. I'll punish myself by kneeling with the clamps on. These rules you're talking about, do they apply to this kind of selftorture too?