Kegel exercises strengthen your ability to control erection and ejaculation. So, contract and release your PC muscle in quick successions. This might be challenging at first, but when done regularly, you’ll see how much easier it becomes. Of course, you may want to start slow. Do at least 25 contractions first. Each contraction should last about 10 seconds. Then, slowly release and relax for a few seconds until you begin the next set.