Jelquing is a free penis exercise that offers a way to increase penis size. In Sudan, where jelqing originates, men do not believe the penis is a muscle as many websites and books would try and have you believe. Instead they believe, quite rightly, that it basically is spongy tissue and veins covered with skin. Therefore you cannot exercise your penis in the same way as a muscle. This type of exercise goes back 5000+ years and it one of the most popular and free exercises amongst men in America looking to increase penis size. Men please be advised that doing this to much or with the use of a male enhancement drug can reduce the size and girth and that basically contradicts any hopes of living a healthy and sexually happy life.