Both Buddhism and Taoism should abide by the Five Commandments. Obeying the Five Commandments is not only a form, but also an inner warning. Among the five realms, there are murder, theft, prostitution and alcoholism. Among them, lewdness refers to greed and lewdness. If you are a monk, you can't commit adultery. Passion is a violation of the precepts. If you are a layman practicing at home, you can have sex between husband and wife. Sexual desire outside husband and wife is considered a crime. So why do Buddhists and Taoists demand abstinence? Mainly used for strengthening essence and nourishing yuan. Now some health sciences are talking about it. Men's semen is the essence of men. If ejaculation is too early or too frequent, it is very harmful to men's health. Apart from nausea, the mind of practice will naturally deviate from this path. Therefore, both Buddhism and Taoism must abstain from sex.