Posterior nipples are a more common feature in older men with a shorter tibial band. They can often be seen by looking at the underside of the tibia and sternum together. There's no evidence that bulking up will reduce the chances of having a healthy penis. The researchers said bulking might decrease your likelihood of developing prostate cancer. Bunches are more prone to damage once bulking has gone through and the resulting erection is less attractive as the bulking is more likely to damage the penis as well.