The trends aren’t really useful either unless you are recording strenuous exercise with the watch. I do a lot of cycling and my fitness in terms of how much pow

The trends aren’t really useful either unless you are recording strenuous exercise with the watch. I do a lot of cycling and my fitness in terms of how much power I can put out and for how long and my average heart rate for the same power has increased vastly, yet according to Apple my VO2 max has stayed consistent at around 45 for years since I only record walking exercises with it. I guess there’s not much it can tell if you only hit the mid 80s bpm at most during an exercise. I realise it’s also another estimate but based on my cycling exercises Garmin is estimating my VO2 max at 55 and it does show a progression in my values.