heart rate

Like Target, Fitbit sometimes knows you're pregnant before you do
By Jonah Comstock | 02:29 pm | February 10, 2016
Fitbit's heart rate monitoring accuracy questioned in class action suit
By Jonah Comstock | 03:00 pm | January 07, 2016
How the Apple Watch measures heart rate, and why it (hopefully) won't give you a rash
By Jonah Comstock | 09:03 am | April 20, 2015