Basic knowledge of sexual life, pay attention to the hygiene of yourself and your partner, do physical examination in time, and don't be an infected person or disseminator of sexually transmitted diseases. Pay attention to the use of condoms in sexual life, one is to prevent the spread of sexually transmitted diseases, and the other is to avoid the impact of unintended pregnancy on the body.
Don't play sex games involving safety, first of all, pay attention to the privacy of sex life. Secondly, with the acceleration of information circulation, many people try SM for pleasure. They have read a book about sexual subculture before, and find pleasure through suffocation. This behavior is very dangerous.