Masturbation before going to bed may cause some harm to the body. If the frequency is too much, there may be symptoms such as lumbar and knee soreness (a feeling of soreness and weakness in the waist and knees), memory loss and other symptoms, which may affect work and life in serious cases. If you masturbate before going to bed for a long time, it may cause soreness and weakness in the waist and knees, and in serious cases, men may also suffer from erectile dysfunction, premature ejaculation, prostatitis and other diseases. Occasional masturbation, both for men and women, will release the accumulated sexual desire, make the body and mind feel happy, and also be able to relax the body, but excessive masturbation before going to bed will cause damage to the body. Masturbation must be restrained, regular and appropriate amount of masturbation is good for the body, more than the body’s tolerance of the frequency will be counterproductive, if there is physical discomfort, to the hospital in time to standardize the treatment.