Panic and Risk are sometimes elements that a person craves and can enjoy. I happen to enjoy them if I feel them in a context of a situation where I feel fairly secure that I will come through it energized and healthy. I get the same feeling from breath control that I get from playing tag. It is a rush of adrenaline and a feeling of being a bit out of control for awhile. I wouldn't enjoy it if I didn't feel totally safe in the situation I was in...the same as I wouldn't enjoy "tag" if it was with someone who was unsafe.