While men might choose to pump iron and get buff for all sorts of reasons, many people do so because they'd like to attract a mate. Rippling muscles are generally considered attractive, so it's reasonable to expect that an exercise routine could have a positive impact on a man's sex life. If that man enhances his weight workouts with steroids, however, he might experience some nasty side effects that impact his sexual performance. In fact, he might find that his penis is less sensitive than ...