How normal is the quality of a couple’s life?

Couple’s life refers to sex life, the quality of sex life is what is considered normal is to be decided according to the feelings of both parties when having sex and the number of times to decide, there is no clear indicator.
Because the couple’s age is different, so the number of sex life is not certain. According to statistics, before the age of 30 years old can have sex 2-4 times a week, 30-40 years old couples have sex 1-2 times a week, 50 years old couples have sex once a week. However, it is not possible to simply pursue the number of times to have sex, but also to strive for the quality of each sex life.
The quality of sex life and personal age and physical health has a certain relationship, if both sides do not feel tired, after having sex feel happy, that couples have a good quality of sex life. However, if there is a lack of physical strength, mental fatigue and other conditions, affecting the normal life and work, it means that the quality of the couple’s sex life is not good, but also need to be adjusted by both sides.
Couple sex life should be regular, from the point of view of good physical and mental health, appropriate physical exercise, can improve their own immunity. If there is discomfort when having sex, stop in time.