What age is a man's prime?

According to recent research from the Kinsey Institute, people of all ages claim to have regular sex. Even so, men between 25 and 39 years old and women between 20 and 29 years old were the most likely to have sex. The frequency of sexual intercourse decreases in older age groups. As for a man's best mental state, psychological studies have shown that he reaches his problem-solving peak around age 19, but his memory peaks around age 28, and then, around age 45, his brain cells begin to deteriorate.