This is all super interesting and really useful.
❝Pace is meaningless on variable grade. Mileage tells you how far you went, not how fit you are. And “it felt good” is real feedback, but it is shaped by sleep, stress, altitude, hydration, and whether you remembered to eat breakfast.
—Chantelle Robitaille
https://uphillathlete.com/aerobic-training/are-you-actually-getting-fitter-simple-field-tests-for-mountain-athletes/







