The idea that 45-year-old men often want to have sex is normal, which is a normal physiological reaction. Sexual life is also called cohabitation, the frequency of sexual life should be to men and women without fatigue afterward, no back pain, no dizziness, the next day full of energy, the two sides in a happy mood better, the frequency of sexual life is not the more the better. Although 45-year-old men often want to think about the idea of sex is normal, but still do not be too frequent, it is recommended that the frequency of about 2 times a week is good. If the sex life is too frequent, will lead to prostate congestion, may induce prostatitis, cause men to urinate frequently, urinary urgency, urinary incontinence, this situation is very difficult, so it is recommended that the usual sex life or to be regular.