This morning, I decided to try a different pace on the treadmill. I walked 4.2 mph, and when it came time for the running minute, I did 6.7 mph. All went well until the last run. The treadmill said I reached a HR of 177 -- "only" 17 higher than my maximum HR is supposed to be. My HR came down quickly when I stopped running, but one look at my RED face in the locker room convinced me that I had gone too far.

Where did I put that HRM? It's time to learn how to use it!