Whether or not you find this helpful will depend to some extent on your personality. Sleep cycle alarm – Some will wake you up at the optimum point in your sleep cycle closest to the time you've requested. Sleep stage data – Many sleep trackers claim to be able to tell you how long you spent in each stage of sleep (Light, Deep, REM, or Non-REM and REM).
Sleep quality data – Many sleep trackers will also tell you whether your sleep has been restless or good quality. Sleep duration – All sleep-tracking wearables will tell you, as a minimum, how long you've been asleep or awake.
Not all fitness trackers and smartwatches track sleep, though the majority do now, and even cheap devices can offer some standard of tracking. What do sleep-tracking wearables monitor?
#Fitness tracker with heart rate and sleep monitor free
And it interferes with hunger signals, too, increasing levels of a hormone that makes you feel hungry, while suppressing a companion hormone that makes you feel sated – which can lead to weight gain.įrom a more cheerful perspective, getting the NHS-recommended seven to nine (on average eight) hours sleep – and making sure it’s good quality sleep – is a free way to improve your health, memory, mood, appearance and decision-making. Insufficient sleep increases your risk of Alzheimer’s, cardiovascular disease, depression, diabetes, stroke and numerous other health problems.
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