Once a day should be in terms of sexual life once a day, which belongs to sexual intercourse excessive, in the long run may lead to kidney deficiency. Generally speaking, under 35 years of age, 2-3 times a week sex is appropriate, 35-50 years of age 1-2 times a week is appropriate, 50 years of age or older, in the case of physical conditions, 1-2 times a month for sex is better. If the body suffers from certain diseases, a day of sex will have a greater impact on the body. If there are cardiovascular diseases, such as myocardial infarction, angina pectoris, hypertension patients, you can have sex only if your physical condition allows it, while patients with heart failure or mitral valve disease, you can not have sex. Some patients with diabetes, prostate hypertrophy and asthma attacks have a greater load on their bodies when it comes to sex, and should do so in moderation. Not only should you be moderate in your sexual life, but you should also pay attention to hygiene, and you should wash well before and after sex to avoid cross-infection. If you are not planning to get pregnant, you should take good contraceptive measures, and do not take a shower or drink cold drinks just afterwards to avoid physical discomfort.