1, close couple feelings: If the couple’s feelings are not good, sexual function is difficult to be much better. 2, avoid unfavorable timing: in other words, is to have sex in a good environment, good physical condition. Bad environment such as: the surrounding environment is very noisy, in public places (in the unit, etc.), not in the private space (in other people’s homes, etc.). 3, bad physical condition such as: sick, drinking, tired all day, no good rest, no good sleep, etc.. Because in many cases, the quality of sex is not guaranteed, and once or twice a bad sex life, will often have a negative impact on the psychology of sex later, forming a vicious circle.