Decided to do some all-out hill intervals to find out what my real MHR is. I've been operating with the lame 220-age formula, which only has a 95% chance of being in the ballpark, much less being accurate. So did a warmup jog on the treadmill, then set it on about 6% and hauled butt, with the Garmin HR monitor in place. Turned out the old lame formula is pretty accurate in my case. The MHR I got is within three beats of the formula number. |