How often is normal for a man to have sex?

Before the reform and opening up, few people talked about sex because people were very conservative about it. With the development of society, people's thinking has changed. Some men will compare themselves with others to understand their own situation. The comparison includes the length of sexual life and how often they have sex. So how often is considered normal for men?

Third, the author of the famous American sex research book "The Sex Plan for a Lifetime" said: "You can't be wrong, because the correct frequency of sexual intercourse depends on the preferences of both of you." There is no difference between meeting the standard and not meeting the standard, only the difference between happiness and unhappiness. Sometimes, even zero frequency can maintain a good relationship.