6/18/2023 0 Comments Most accurate sleep tracker![]() Sleep occurs in "cycles" that last somewhere between 60 and 120 minutes. This means it's not really possible to say whether a particular amount of REM or non-REM sleep is "optimal".Ī more important measure, Dr Cunnington says, is how someone "sequences" through different sleep stages throughout the night. ( Getty Images)Īs Dr Reid explains it, the amount of sleep we get on a day-to-day basis changes in response to what's going on in our bodies. "But this has a drawback for shift-workers, or anyone outside of a nine-to-five schedule, who will be sleeping or napping during the day and need credit for that.įemales tend to report poorer quality and more disrupted sleep than males. "If you're only looking for sleep at night, you're less likely to have an embarrassing error where you say somebody was asleep in the afternoon when they were just kind of sitting around," she says. ![]() Some, for example, will focus almost exclusively on picking up overnight periods of sleep. So they went a little heavy on the 'sleep pedal'."ĭr Walch adds that devices will also differ in terms of how much they are programmed to pick up on sleep or naps that happen outside of "standard" bedtime hours. "To be clear, Garmin nailed every sleep in that paper," she says. In fact, standard actigraphy outperformed Garmin devices at accurately identifying periods of wake in a 2021 paper. However, she says, that has not automatically translated into a big leap in accuracy. Dr Walch says we should be asking how accurately devices predict when we are awake, versus asleep.
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