@walkinggirl Thanks for your reply. Supposedly, this second pacer is better equipped for those activities. HOWEVER.........one of the cardiac nurses called and said best I refrain. But I'm in a jam because I don't want to lose the definition I've redeveloped but I don't want to end up in the hospital. In the past, the electrophysiologists said pushups are fine, but the nurse said if my chest is expanding, that could be a concern. I know the safest thing to do is to never hit the speedbag or do pushups, but I enjoy doing those activities and it's good for my mental health, too.