How much? I used to do it sometimes for like possibly 15 minutes, like as a kid or get it over with a few big times. Now, I can't feel it as much anymore and it's only once, sometimes twice. I think I could feel more, but I dunno, maybe have to go to Miami. :( Still, isn't a nice thing. I seem to do it once every day. It's kinda weird. It doesn't really scare me. I feel there was a tall, thin, 5'6" cloaked figure of death behind me.