Hello everyone, my Fenix 5HR has been recording Anaerobic Training Effect fine up until 4 days ago. It varies depending on the session I run but I always get a score, albeit a low one, even on recovery runs. In the last 3 days I have not been able to get any score on my anaerobic TE. I ran 10km yesterday and recorded 0.0 Anaerobic TE. I have run 2 x 5km sessions over the same course in the last week with the same Aerobic TE but the latest run recorded no Anaerobic TE. For both runs I did 60%+ of the run in my threshold zone. I have included screen shots of the TE below. Thanks in advance for help.
Today's 5km run:
4 days ago 5km run:
