How much is too much ballbusting/cbt
I have seen many people discussing their limits in bb and some femdom video limits. But medically speaking how much or what can a guy take that doesn’t make infertile or cause any damage. Is using needles the extreme? or Is it hard twisting and squeezing? Or even hard kicks and punches/ smacks(paddles etc.)? Or should we just stay away from bb completely to have kids? I do love watching all cbt ...