Not as comfortable as Wei Zi.

First of all, it is 2 1 century. How can anyone think masturbation is harmful? On the contrary, long-term abstinence will be harmful. As long as it is two or three times a week, there will be no problem. Of course, if you want to have a kidney, you don't have to be celibate. If you want to get pregnant, you can abstain from sex for a month. If abstinence lasts too long, sperm vitality will be lost.