I was working on machines that were essentially weight trining at a gym for a while with my Silver Sneakers. Then I got bored, which is par for the course for me. I also tried to get my heart rate up on the treadmill--"cardio." Now I'm glad I stopped and am worried about carrying heavy bags of groceries. I got a medic-alert bracelet but everytime I go anywhere I can't help imagining what would happen if I had a crisis. I'm at 4.2 so it could be worse but I still have it in the back of my mind most of the time. This seems to run in your family. I'm getting a genetic test to see if mine's hereditary so my kids will know if they're at risk. Good luck to you.