@Michele-Zago I get that. You mean physical fitness metrics like VO2max (which decreases noticeably when you hike with backpack), right? Yeah, that would be cool. But given the fact that the formulas and algorithms for this are already quite complex and still don’t work for everyone, I’m afraid this would be extremely challenging to implement. On the other hand, if this would be done right, it could be quite a breakthrough Perhaps machine learning would help here?