The pelvic muscles at the base of the penis are known as the male sex muscles, and the way to exercise them is to pretend that they are preventing urination. Generally, exercise twice a day, 15 times each time, increasing the number of contractions day by day until you can do 50 times a day. On this basis, you can make a little change, such as contracting the pelvic muscles and holdin... https://www.viagra-hk.cn