You can Exercise to enlarge penis it by sitting in a comfortable place, then you have to warm up for strong contractions, and then Exercise to enlarge penis the penis tightly for 10 seconds and after that do PC flexes, and when you reach to the last PC flex, hold it as long as you can, then take a rest for 3 minutes, and follow this with 40 strong PC flexes. Masturbate, stop, masturbate, and after 15 minutes you can ejaculate. Otherwise, you may even tear your ligament. Regarding the circumference of the adult fully erect penis with the measurement taken mid-shaft, it was found to be 8. It's the same as wet jelqing but without lubricant.