In this particular form of exercise, different versions have been developed
, but basically, it will be challenging yourself, also known as masturbation, to obtain an erection. When erection occurs, you stop for a moment, until you start to feel that you start to lose your erection. When you reach this particular point, you begin to re-stimulate. The process will be repeated again and again for several weeks about so that you gradually learn to maintain an erection for a long period of time, while at the same time increase its sexual tolerance.