This is both interesting and slightly worrying. I got a Garmin Vivostyle watch/activity tracker for my birthday last year and it does all sorts of very useful things to help me keep an eye on what’s going on with my poor beleaguered body in an attempt to spot at least some form of pattern to my symptoms. It tracks heart rate, stress levels, something called a “body battery” which uses your heart rate variability measurement (HRV) to predict and track your energy levels (something I’ve found extremely useful for ME) and a host of other stuff like sleep and O2 sats. It also has a high heart rate warning so I get a buzz on my wrist if my heart rate gets too high when I’m not doing anything too strenuous. Anyway, they’ve recently updated the phone app and the watch software to include an “exercise intensity tracker”. Apparently according to the WHO we’re all supposed to do about 150 minutes a week of high intensity exercise, which means exercise intense enough that you can’t really talk during it. So more than jogging, more like intense aerobics or sprinting, obviously something well out of the capabilities of most ME peeps, and certainly much, much more than I could do with severe ME that leaves me stuck in bed most of the time. My watch works out how long I spend in this “high intensity” mode using the heart rate data it collects and an algorithm comparing my resting heart rate and my heart rate during activity (I’m quoting Garmin’s explanation here, I’m sure someone will understand exact what they do to get these results!). Bearing in mind that I have severe ME and have spent the last six weeks pretty much in bed 24/7 (and my heart rate goes from mid fifties to up to between 105 to 130 literally just from standing up due to POTS), the graph it showed me today is pretty astounding and looking at these figures it’s no wonder I’m feeling dreadful despite doing sweet FA for the last six weeks. My body is doing the equivalent of high intensity exercise the entire time I’m awake. Instead of the 2.5 hours a week of intense exercise recommended for healthy people by the WHO, according to this, last week I did over 85 HOURS in one week of “high intensity exercise”, or at least my heart and body did, even in bed. An entire week is only 168 hours so I spent half the week, or my entire waking time, with my poor body in a state comparable to high intensity exercise, exercise so vigorous that if I was doing it for real I wouldn’t have breath to speak. And this is while I was pretty much doing nothing but being in bed 24/7. While it’s quite shocking to see just how hard my poor body is working at the moment even when I’m in bed the whole time, it’s also really validating to see it in actual data rather than just feeling it subjectively. Although I still feel like hammered crap, regardless of whether it’s subjective or objective... I try and do the HR pacing to avoid PEM as far as I can but unfortunately for me, I can go over the HR limit just from standing up so it’s no wonder I spend most of my time in bed. But this new thing on my watch really shows in stark detail just how much work my body is doing even when I’m actually doing virtually nothing at all and am flat on my back to boot. Somewhat sobering, tbh. Not really sure what to make of it but thought others might be interested to see an actual data representation of how hard our bodies work even when we appear to be doing very little. And I can thoroughly recommend the Vivostyle if anyone is thinking of an activity tracker that isn’t a typical sports watch. Here’s the screenshots of the app - the bar graph is the activity one for last week and the line graph is my heart rate over the same week (click on image to see full size pic). I’d be interested in people’s thoughts on this. Edited to change photos from full size to thumbnails and add instructions on how to view.