Doctors say most metrics provided by your Apple Watch, Fitbit aren't helpful to them

[ad_1] Credit: CC0 Public Domain We use wearables to count calories, measure heart rates and even rate our quality of sleep. With healthier living in mind, we purchase kid-friendly versions for our children and step-counting options for grandparents. Apple Watches, Fitbits and other fitness-trackers are everywhere, with data-obsessed users tapping away at tiny screens from […]