I definitely have high heart rhythms. I was hospitalized for beats over 200 recently. My doctor is constantly telling me not to let this stop me from exercising. My condition is not considered life threatening. But whenever I exercise my heart is ok until I stop and about 5 minutes later my heart is racing. I usually wait it out but do have 30 mg of dil tiazem if I need it. Does anyone know of a good exercise book that is gentle on the body? I do walk but it does give me issues. I am gaining weight but I hardly eat. My doctor isn't for an ablation since she feels there are risks for me.