Kegeling helps you get easier and harder erections. With a strong pc muscle you can also pump up your penis larger then a normal 100% erection.
Advanced exercises in kegeling and controlling you pc muscle will teach you to control your orgasms and erections. At this moment, after a few months of kegeling I can do multiple dry orgasms (not every day, just with utmost concentration)
Off course, if you perfect the lady’s will love you (long) for it!
Also training you pc muscle now will go a long way in preventing erectile dysfunction later.