The main hazards of masturbating once a day are the following: First, it leads to weakness in the male body, such as kidney deficiency, impotence, premature ejaculation, all of which may occur. Second, affect the quality of male sperm, leading to a significant decline in male sperm quality. Third, it may cause urinary tract problems, such as urethritis, prostatitis and other conditions, which is due to frequent masturbation leads to a decrease in the immunity of the urinary system, resulting in urinary problems. In summary, men masturbate once a day is still very harmful, it is recommended that the number of times you should reduce masturbation, from once a day to once a week, or even once every two weeks will be better, and at the same time to increase outdoor exercise, enhance their physical fitness, increase the amount of exercise, for male health and improve the quality of sperm will have great benefits.