head_wind

Thanks for your answer. A lot of questions that you shouldn’t have had to ask! I do real workouts in the gym 2 nights a week. That includes typically a ˝ hour cardio session with 2 to 6 heavy-duty intervals. Mean HR of ~130, and 6 – 8 minutes >140. My attempts at measuring max HR have been confusing at best. Then about an hour of mostly free weights, hitting upper, lower, and core. I think that I’ve been well trained in this stuff.

When not under duress I maintain >=90 RPM. I also feel naked without my HRM.

I guess I never tried a _l_o_n_g_ slog like the one that got me Sunday. It felt like when I was learning to ski: when it gets steeper than your comfort level you regress in your technique.