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.
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.
Todays medically reviewed techniques and exercises are a lot more sophisticated than in the beginning, tested by thousands of men who successfully enlarged their penis this way, so it’s really only a matter of time. It works for everybody, without exceptions. It’s no easy way to make your dick a bit bigger, like training in the gym: Cheating yourself, skipping exercises or being lazy and neglecting your training means it will take longer till you notice results. Do it!
A fairly common way for surgeons to add volume in such areas of the body as the face and butt, fat grafting is also an option for the penis. Dr. Tim Neavin, a plastic surgeon in Beverly Hills, California, says that some surgeons have been doing penile fat transfer (also called composite augmentation phalloplasty) for decades. In this technique, a surgeon takes fat from the belly or inner thighs and injects it into the penis to increase girth.
Penis pumps and vacuums are popularly used as sexual aids to promote erections in men. They are also used by some with the intent of increasing penis size. These devices are placed over the penis (and sometimes the scrotum) and use suction to engorge the penis with blood. If used consistently over a long period of time, they can cause the skin of the penis to become "spongy" and have a thicker appearance.