A little update for this thread. It wasn’t much of a ride as rides go, a shade under 10 miles and just about 30 minutes BUT I got out on my bike today for the first time post “cardiac event”. 3 weeks ahead of schedule. Big thanks to my cardiologist and the PT’s at cardiac rehab for letting me push myself. It felt good. I wanted to go longer but promised my wife I wouldn't push it the first time on the road. My heart itself wasn't the big concern as I have been riding our Peloton pretty hard. I guess falling and injuring the the healing sternum is the concern. Another mental hurdle cleared.