I sat on a riding lawn mower for 3 1/2 hours today and my watch showed my heart rate spiked almost as high as my one hour workout at the gym-- only for 3 1/2 hours! Needless to say, I burned a hell of a lot of fictitious calories. It said I had burned over 600 of them. So apparently the best way to lose weight is to sit on my phat ass on a riding lawn mower -- for 3 1/2 hours -- and then I can have that peanut butter milkshake -- that keeps entering my mind. Seriously, this appears to be a problem.
https://forums.garmin.com/sports-fitness/sports-fitness/f/forerunner-230-235/139300/calories-burnt-huge-help-with-understanding-activity-class-setting/773010
I'm going to wear my heart monitor next time I cut the grass with the riding lawn mower and debunk this POS over-the-top smart watch technology. Also, if your arms don't swing, it is impossible for it to determine if you are moving which is why cutting the lawn with a push mower won't tally your steps because your hands are in a fixed position.