Yes, you can. However, although there's no explicit reason why you couldn't bowl with a pacemaker, it's probably not a good idea. Pacemakers are designed to help regulate your heart rate, and the forces involved in bowling could potentially disrupt the device. Plus, if you were to have an accident while bowling, the pacemaker could be damaged. If you're interested in taking up bowling as a hobby, talk to your doctor to see if they have any concerns. They may be able to give you some specific advice on how to participate safely in the activity.