From a medical point of view, what are the benefits of sex to health?

1, exercise, 2 increase hormone secretion, 3 protect prostate, 4 effectively reduce the incidence of heart disease and myocardial infarction, 5 relieve pain, 6 relieve stress, 7 reduce the occurrence of skin diseases, 8, semen helps to remove vaginal bacteria, 9 improve the disease resistance of immune system, and 10 helps to prolong the life of both men and women.