Wearing a HRM I was doing a quarter mile climb going from 5 to 9%. Been up it several times and this time I wanted to get a personal best. (Note I will be 67 in Dec). When I was climbing my HR went from 150 to 170. Giving it a final sprint to the top, my HR hit 186. At that time my Garmin beeped and gave me a warning that I had exceeded safe levels and to back off. I felt fine except oxygen starved and within a minute and some easy riding got down to 140. Don’t intend to hit my redline of 186 often but as a cardiac stress test, I passed. The Garmin didn’t know I couldn’t have exceeded that number if I had tried.
__________________
Road 🚴🏾♂️ & Mountain 🚵🏾♂️