The penis will gradually increase in size and thickness during puberty, and there is no physical penis exercise to increase the size of the penis in adulthood. The size of the penis itself individual differences, there is no need to obsess about the size of the penis in general, the length of the penis in the erectile state is greater than 8 centimeters is normal, can be a normal sex life, reproduction, as well as the ability to let women to achieve sexual satisfaction. Usually do some functional exercise, perineal massage can promote local blood circulation, sexual function has certain benefits, but there is no exercise method can make the penis bigger, should be correctly recognized. If the body has functional abnormalities, or abnormal penile development, you should go to the hospital for examination, and follow the doctor’s instructions for treatment.