In my case, I was two updates behind on my iPhone (because the "automatic updates" setting neither updates automatically nor provides notifications to check for updates...it's only because my watch stopped tracking activity that I even thought to check). After two updates to the iPhone and one update to the Apple Watch, I unpaired and re-paired, and it STILL is not tracking my activity. I can see it graphed in the fitness app on my phone, but the graphs of my activity don't translate to numbers either in the app or on my watch face. For example, the time graph for standing hours shows I earned those standing hours at 1:00 AM and 6:00 AM-12:00 PM. However, my standing hours both in the app and on my watch, continue to read 0. Same for the calories burned per hour: 0 calories for the day on both app and watch face, but my calorie burn on the graph in the app shows I'm burning calories each hour. And I should have four exercise minutes according to the graph that shows I earned one minute during four separate hours in the morning. The watch is monitoring my heart rate, and apparently it's monitoring the other things as well, because my phone wouldn't have an estimate for calorie burn, know when I'm standing, or track that I've taken about 2000 steps so far today (I'm not keeping it with me, so I don't think it's tracking my distance itself without the watch's help). I'm going to post my issue separately if I don't find any other solutions in the forums, but this has been the worst update yet. I'm used to having issues with my wake-up alarm that need to be worked out in different ways after each update, and I was like fine, whatever, I'll get an alarm clock, but this one has cost me most of today so far and has lost me the reasons I got this watch in the first place.