The frequency of sexual intercourse between couples is on the decline (adult novel about sexual knowledge)

As age increases, the frequency of sexual life tends to decrease: about 3 times a week at 20-30 years old, 2 times a week at 31-40 years old, 1-2 times a week at 41-50 years old, and once a week at 51-55 years old. However, the frequency of sexual life among contemporary people varies greatly from person to person.
The frequency of sexual life is the most intuitive and important manifestation of a couple's sexual life, but the frequency of sexual life varies greatly due to the influence of many factors such as marital status, physical fitness, the ages of both parties, and sexual ability, and is always in dynamic change.
For example, a survey on the frequency of sexual life of contemporary Americans showed that 8% of men and 7% of women have sex more than four times a week, 26% of men and 30% of women have sex two to three times a week, 16% of men and 18% of women have sex several times a year, and 14% of men and 10% of women had basically no sex in the year before the survey.
As important as age is the influence of marital length on the frequency of sexual intercourse between couples. According to data cited by the famous sexologist Masters, among the newlyweds surveyed, the frequency of sexual intercourse was 14.8 times per month in the first year, which decreased year by year to 12.2 times per month in the second year, 9 times per month in the fourth and fifth years, and 6.3 times per month in the sixth year. While many sexologists point out that the frequency of sexual intercourse between couples decreases with increasing age of marriage, there are also reports that some couples do reach their peak frequency of sexual intercourse 15 to 20 years after marriage.
Currently, most surveys and general opinions show that education level, occupational category and religious beliefs have no significant impact on the frequency of sexual life between couples.