The researchers noted that a successful "Sex adult product factory" Sex allow secretion of dopamine in the brain both improved significantly, resulting in a highly intimacy, increase the degree of understanding between the sexes, which is particularly evident in the role of men . In addition, the study also found that women are more susceptible to sexual desire in a noisy environment, mood and other factors, men more hugs, kisses his wife, and gently stroked her hair and can help to improve the sharing of housework. "Sex adult product factory" also reminds physicians, but men also have disadvantages ligation, ligation of men generally, all physicians will recommend patients to think clearly and to think again, because men upon ligation, if they want to turn the future, think pregnant again, microsurgical vasectomy still turn their own expense, "Sex adult product factory" and the cost is more expensive than the cost of ligation, and connection rate with the number of years will be the longer, the lower termination rates, and men after ligation, self will produce autoimmune (anti-sperm antibodies), then turn lead to ligation pregnancy rate is not high, it must think twice about it.