Study Shows Fitbit Heart Rate Devices Accurately Track Light, REM and Deep Sleep Stages
Analysis of over 4 billion nights of Fitbit sleep data supports scientific theories that sleeping 7+ hours can positively affect sleep quality. Fitbit, one of the leaders in connected health and fitness wearables, has validated the ability of wrist-worn trackers that incorporate movement and cardiac sensors, like Fitbit Alta HR™, Fitbit Blaze™ and Fitbit Charge 2™, to … Read more