My cardio fitness score had been steadily climbing from 46 to 55 (excellent) the past 2 months, but yesterday after clocking in my first 5km outdoor run, it dropped to 33 (fair)!!
My RHR was ~47 the past weeks and 50-51 the past few days. I'm 24.
Will it climb back to 55? A sudden drop of 20 points is so **ahem** demoralising. I loved seeing "excellent for women your age" and now it's just "fair" :(.
I've been working so hard considering the fact that i was super out of shape a few years ago.
