Google Blog – 3.18.24
Getting a good night’s sleep is about more than just the number of hours from when your head hits the pillow to when you wake up. “Generally people aren’t the best judges of how long they’ve actually slept or whether it was quality sleep,” says Dr. Conor Heneghan, a senior staff research scientist on Google’s consumer health research team. That’s where wearables like Fitbit can come in handy.
Source: Why tracking your heart rate can help you get better sleep