Less sophisticated fitness trackers have tended to use wrist movement to monitor sleep – stop sniggering at the back – but now the vast majority your use heart rate instead to calculate when you fall asleep, the type of sleep you’re having and how long you stay asleep. What features should I look for in a sleep tracker? Developed with sleep physicians, it's capable of tracking your sleep cycles to provide a sleep score, along with the ability to detect snoring and sleep apnea.

Best mattress sleep tracker: Withings Sleep Analyzer (£119) Rather not wear anything at all? Withings' under-mattress tracker is for you.An ideal choice for people who'd rather not strap obvious bits of tech to their wrist and/or head. Best minimal sleep tracker: Oura Gen 3 ($299) Made from lightweight titanium, the Oura is a cleverly designed smart ring that's capable of measuring your heart rate and sleep quality, in addition to activity and fitness tracking.These include heart rate and temperature monitoring, sleep quality measurements and even automatic snoring detection which could be used to pinpoint disturbances throughout the night. Best overall sleep tracker: Fitbit Sense (£189) Offering plenty of bang for your buck, the Sense is a superb standalone smartwatch that happens to also pack in a robust set of sleep tracking features.But first, this is what to look out for… What's the best sleep tracker? It’s also worth remembering that not everyone wants to wear tech in bed, so we’ve gathered together the best alternatives that can track your sleep from under the mattress.

The ubiquity of gadgets like wearables means that millions of us already own a sleep tracker, capable of calculating all sorts of metrics, but they’re not all made equal. The best sleep trackers can help by breaking down sleep data with metrics and tracking features like heart rate variability, letting you take back control for a proper night’s sleep. Whether you kip, slumber, snooze or snore, a good night’s sleep is vital to your health and happiness.

Smartwatch with sleep monitor