The nipples are the part of the breast that is commonly used for this type of activity. Pain is typically applied to them using nipple clamps, a type of sex toy which can be attached to erect nipples to pinch them and to restrict the blood flow to them by applying pressure. When nipple clamps are removed, further pain is caused by the return of normal blood flow. Men's as well as women's nipples of can receive such treatment.
Bound breasts of a woman being pressed further by a man using his hand.
Breasts being compressed using pliers.
In order to protect the breasts from damage, breast torture must be carried out within certain limits. For instance, a reduction in blood circulation can occur in bound breasts which may be problematic if the breasts are tied for a long period of time.