Alternating hot and cold bath is an ancient exercise method to enhance male sexual function. The specific method is: soak your body in warm water in the bathtub, come out of the bathtub after your body is fully warmed, apply cold water to your genitals for about 3 minutes, and then enter the bathtub after the penis and scrotum contract, and repeat this for 3 ~ 5 times. If you can insist on alternating hot and cold baths every day, you can make men after middle age full of energy, enhance sexual function and gradually reduce fatigue.

When taking a bath, you can pour warm water around the penis root with a shower head, which also has a good effect on restoring the "energy" of the testicles. Because the erection of the penis makes the ligaments and nerves supporting the penis quite tired, and the longer the erection time, the more serious the fatigue. The stimulation of warm water can accelerate blood circulation and relieve the fatigue of testis and penis as soon as possible. Shower is not the same as soaking in the bathtub. Shower can stimulate local acupoints by central heating. Of course, the water pressure in the shower is better.

The groin inside the thigh root is also an important stimulation site. Because the groin is the "communicating artery" that transports blood and nerves to the testicles, the blood circulation in the groin is very important for male sexual function. You can stimulate the groin with warm water in the shower every day and touch the groin with two fingers from top to bottom, which is also very beneficial to enhance male sexual function. It should be reminded that the elderly and infirm exercise in this way, and they should beware of catching a cold.