Harmonious sexual life can promote the brain to produce more neurotransmitters, which is helpful to relieve mood and depression. Moderate massage after sex helps to secrete endorphin, a sleep inducement, which makes people sleep more soundly. Regular sexual life can promote the brain olfactory bulb to produce new nerve cells and improve the sense of smell. To prevent tooth decay, male semen is rich in zinc and calcium, which can reduce the probability of tooth decay. Endocrinologists at Columbia University and Stanford University have found that women have sex at least once a week, which can make their menstrual cycle more regular. The boundary between pain and happiness is very thin, and sex can help people distinguish the difference between them and feel happiness more strongly. Sex can speed up childbirth. Male semen is rich in prostaglandin, which can naturally expand after entering the female cervix, leading to a smooth delivery. Improve communication skills. Taking the initiative to express your thoughts in sexual life is helpful to express your views well in other fields. Sex gives people more happiness than wealth. According to a recent survey published by the National Bureau of Economic Research, if measured by data, the happiness generated by a harmonious sex life is equivalent to the happiness brought by earning $6,543,800 a year. Sex is good for the environment. Sweet lovers are willing to squeeze into a small bed, share the quilt and comfort each other with their body temperature; Turn off the lights and feel each other's curves with your hands; Speaking of the rise, bathing can save resources and is a simple way to protect the environment. Therefore, moderate sexual life is good for your health, but not too often.