The pectoralis muscles are the largest muscles on the chest wall but there are several other muscle pairs present. These muscles can be easily strained with exertion. Chest wall injury is more likely to lead to a bruised feeling or even a stabbing sensation rather than a squeezing chest pain....
then your erectile difficulties are probably not primarily physical in origin, but are largely dependent on relationship issues and feelings: how you feel about one or more of your sexual partners, or how stressed you are feeling, for example. In...