I don't have a master, I'm married to a vanilla man, so what i do is all to myself. I have weighted clothespins i clamp to my nipples (five ounces on each clothespin) and i'll leave them on until the pain is so bad i have to take them off. That's usually about half an hour to forty-five minutes. Without the weights i'll wear them for an hour to an hour and a half. However,i was told by someone else on this forum pages that that's not a good thing to do, all sorts of damage and stuff might happen, so i'll probably start easing off on them...