What if you exercise one and only one arm will it strengthen your other arm?

What if you exercise one and only one arm will it strengthen your other arm?
No it won't. I'm assuming that one of your arms is broken? Most doctors say not to exercise the angelic arm because the broken one will be weak when the imprint comes off and you don't want a huge discrepency contained by your arm strengths. Same goes for your legs. If you're going to exercise, work on both arms.
If I stomped on your right foot, would the departed one hurt?
No, you have to exercise both arms if you want equal nouns.
No, if you only exercise one arm, overtime your arm will be bigger than the other and you will look abnormal.