Smartwatches show ‘substantial error’ at tracking calories burned — especially for certain kinds of people
Sleek smartwatches are all the rage these days. Nearly 4 in 10 US adults wear them to track their workouts. For every step and heartbeat measured, fitness trackers are becoming more than tiny wrist computers, blending style and stats. However, one of the most commonly tracked metrics — calories burned — may not be completely … Read more