| Not useful - because inaccurate on individual level Not useful - because algorithms for caloric expenditure are usable now only for group level experiments >that’s not just a smart watch problem True https://www.mdpi.com/2075-4426/7/2/3/htm#jpm-07-00003-f003 >Overall, heart rate error was within the acceptable error range for the majority of task/device combinations, but EE error exceeded the allowed threshold for all tasks and devices. And I repeat - for group level experiments such devices are good For individual, without calibration - not https://www.mdpi.com/2075-4426/7/2/3/htm#fig_body_display_jp... You can see this on Fig2. That individual dots on image - that may be error on your device on your body And even more - I do not know what for you need your pulse measurements. Even accurate You do not need that number when you reach your peak velocity and do not need it when your sitting >It’s also best-in-class accurate for calorie expenditure, which is fine for general day-to-day tracking and dietary planning. I know even more accurate device for such purpose Scales And btw - scales can be mechanical so they can't send your data |