How long does a normal couple have at a time?

A healthy adult male should have sex for at least 1 minute, with an average time of about 3 minutes. If there is a proper pause time, coupled with the change of consciousness, the duration of delayed ejaculation may reach 10 minutes, even 30 minutes, and sometimes even longer. So if it is less than this time, it can basically be judged as premature ejaculation. Of course, the occasional 1 time does not count. The duration of male sexual intercourse is related to male sexual ability and will change with age. When a man is between 50 and 60 years old, his sexual desire will not necessarily decrease, and he will even be a little excited, and his sexual ability will even be maintained until he is 60-70 years old. After 40 years old, the number of sexual intercourse should not exceed 4 days, 1 time, after 50 years old, 1 time, 1 time per week.