I went on the group ride tonight. There were only eight of us with one guy being 52 and the rest kids in their 20's and 30's. I'm 68. There was rain to the north so we rode east then south 53 miles. The 52 guy and I fell off the back a few times but they let us catch up. We went over Chesterfield Hill which is 1.75 miles and 9 percent. As I write I am toast. My average speed was 18.8 which considering Chesterfield Hill and a few other steep hills is cooking. They dropped us in the last five miles so the kids probably averaged 21-22. At no time on that ride did I ever feel like my heart was going to explode in my chest nor did I feel like anything was wrong at all. I didn't have the horsepower I had twenty years ago but aside from that everything seems fine under the hood. I need to think about this. My plan is to wait until I turn 70 and race again. I'm still thinking because I take the warnings seriously.