Testis is an important gonad of men, which has a certain influence on sexual function. If the testicles are healthy, the fertility and sexual function of men will be greatly improved. If you want to massage your testicles, you should massage around them, not the testicles themselves. You can massage the middle part and the bottom for about three to five minutes. Grab the testicles with your fingertips, pull them down and put them back. Do this several times. It is best to apply a hot towel to the testicles in the morning or before going to bed, which has a good preheating effect.