Reminder: When it comes to heart-rate tracking, consumer fitness trackers are not medically accurate - CNET

Reminder: When it comes to heart-rate tracking, consumer fitness trackers are not medically accurateCNETThe latest comes from The Journal of the American Medical Association, or JAMA as it's more commonly referred to. The peer-reviewed medical journal published a research letter questioning the accuracy of wrist-worn heart-rate monitors. These studies ...and more »