It also seems to have to do with the changes in algorithm when Strava went from "suffer score" to "relative effort." Back in 2016, in the Suffer Score days, my fitness peaked at 142, and I could see Fatigue scores all the way up into the 170s. In the past six months, I've not seen a Fitness score above 80 or below 71. On the 4th of July, I did 108 miles with 5,000ft of climbing, in 106º temps, and netted a Fatigue score of 84. I often wonder about Strava's math. I've had Move Ratios of 1.00 (moving time and elapsed time match) two days in a row, even though I stopped for signs/lights several times on each ride. Strava is just a big fan of rounding off.
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