Intercourse is a normal physiological phenomenon, even if it is a physiological phenomenon because of the different ages of people, people’s physique and different frequency, or different duration of the situation, there is no hard and fast rule which is normal, or which is not normal. So if you have intercourse twice a week also belongs to the normal phenomenon, only because the body is more fatigue, or older in the case of physical decline, may lead to a decrease in the frequency of intercourse, intercourse duration will also be reduced, also belong to the normal phenomenon, as long as the intercourse does not feel fatigue, and can reach orgasm, no other uncomfortable situation are normal. It is recommended that the process of sexual life must be correct, do not compare, as long as they can adapt to the frequency and duration of sex, and can reach orgasm, the couple have no regrets is normal.