Yes, you can exercise with shoulder impingement, but certain exercises are more appropriate than others to help improve your shoulder. In most cases a good supervised physical therapy program followed by a home exercise program will improve your shoulder and allow you to return to activities.

Yes you can, but avoid overhead activities if you have pain, and see a physical therapist for specific exercise program targeted at improving your "impingement".

Absolutely! Exercise is a part of the treatment plan. Gently swimming, and any cardiovascular activity that involves the legs are very important. The treatment of shoulder impingement involves rotator cuff stretching and deltoid strengthening, to name only a couple.

Yes you can, but I highly recommend getting your shoulder adjusted, so the impingement will go away.

Consider physical therapy to properly correct the impingement