For most men experiencing soft or incomplete erections, or just looking to improve the hardness of their erections, the solution is simple: cardiovascular health. We know that probably isn't what you want to hear, but the number one cause of erectile dysfunction is poor cardiovascular health – so much so, in fact, that there seems to be a link between ED and heart disease. What does that mean for you? Simple: lose weight, improve your diet, and improve your cardiovascular performance. If you're a smoker, quit. Lifestyle factors are still the biggest threat to your erections, so get those in check ASAP.
Lose belly fat. Your penis may look smaller than it really is if it's partially obscured by skin that droops over the top. Losing belly fat is no simple task, but it can make a big difference when it comes to the perceived size of your penis. Start taking measures to lose weight and you'll likely see improvement in other areas as well. According to a report from Harvard, men with a 42-inch waist are 50 percent more likely to have erectile dysfunction (ED) than men with a 32-inch waist.
“The penis extends for two to three inches inside the body in the pubococcygeus (PC) muscle, which can be strengthened in order to achieve stronger erections and orgasms. It also helps a great deal with obtaining better ejaculatory control,” says Hall. “The PC muscle, which surrounds the prostate gland, is like a valve around the genitals. Orgasm builds from the prostate, so learning to develop these muscles is highly beneficial. Doing PC muscle exercises helps to strengthen the muscle, and men can even add weight to help build it up,” says Hall.
Definitely yes, if you have a big or small penis is mostly defined by your genes. Sons of men with a large penis often have a large penis. Sons of men with a small penis often have a smaller penis. There are certainly exceptions, but in general genes are very dominant when it comes to erect penis size. From my own experience and research, genetics are the most dominant factor in size, environmental factors or lifestyle only have very limited to no effects.