I've worn numerous wrist based step counters, or pedometers if you will, and the one thing I've observed with ALL that I've used (FitBit Surge, Garmin Vivofit, Basis Peak, JawBone etc.) is that you can also get a lot of false steps recorded depending on your arm movements, or lack of arm movement as well. As an example I work part time stocking shelves for a retailer, this morning my S2 showed me at 6000 steps in slightly under an hour while there is no way I walked that many steps. Compare that to a different type pedometer that is worn at waist level (FitBit One, Google Fit and probably others) Right now my S2 is showing 9984 steps while Google Fit, which is based more on actual body movement rather than arm movement is showing 6,405 which I'm sure is much closer to my actual step count. I just don't put too much stock for any wrist based pedometer unless it is only used while actually walking, if that makes sense.