Hey there, great platform and community here, love it and I weekly suggest to other cyclists! I have been using Intervals.ICU more and more lately as I purchased a power monitor (2w) for my road bike and cycling is my only sport (I do limited weight training to help with bike/age 47).
I had a overtraining (more like newbie overcooking) last year and I am always scared of the redline.
My training seemed fine and progressing for the past 2-3 months with a professional coach help. Very few exceptions reaching the Fitness red danger zones (1 in the past 4 weeks)
After trying to sync my heart rate zones from Intervals to Strava and Garmin (it keeps auto messing around my zones!) I was really exploring all the screens here and something really weird happened as you can see from screenshots bellow. .
What I remember of changing was fitness from absolute to percentage.
What could I have done to completely mess up my data like that ?