One of the sexual medical advice is that the duration of sexual intercourse should not be less than ten hours
100 sexual medical information
13- It is medically desirable that the period between the two sexes is not less than 10 hours, no matter how much the man has intercourse, even at the beginning of married life. From it there is blood in place of semen, and it is clear that this is a great waste that may harm the man in his health and disturb the woman to some degree, both physically and psychologically, in addition to the fact that - from the abundance of her husband’s intercourse with her - she becomes cold, doing whatever she wants to please him only but without participating in his enjoyment.