I realize this thread is old but figured I would contribute. For me, I am fond of exchange of power: vulnerability and loss of control through bondage, chastity, tease & denial, some humiliation, reward/punishment, predicaments, and the like. I’m in for mild to moderate pain, but my tolerance is not great, and I steer clear of corporal punishment or impact play for this reason and because I need to avoid bruises, welts, and marks.