The “Sleep Score” is one of Fitbit’s most alluring metrics that people like to compare and improve on. Fitbit is now testing “Sleep Animals” as a friendly but surprisingly smart way to encourage ...

Sign up for CNN’s Sleep, But Better newsletter series. Our seven-part guide has helpful hints to achieve better sleep. Max Genecov is a doctoral candidate in ...

At the moment, the feature requires users to have Fitbit Premium, but not all subscribers can see them yet because it is still in beta version, according to ...

Every animal with a brain needs sleep — and even a few without a brain do, too. Humans sleep, birds sleep, whales sleep and even jellyfish sleep. Sleep is universal "even though it's actually very ...

Add Yahoo as a preferred source to see more of our stories on Google. Max Genecov is a doctoral candidate in clinical psychology at the University of Pennsylvania, a dad, and a stuffed animal owner.