Among all the test nights, the proposed algorithm based on k-means clustering shows a superior or equivalent performance compared to the вЂњFitbitвЂќ results. 5 volunteers were recruited for the tests. A method of calculating a sleep score based on the duration of sleep and the duration of each sleep stage is proposed, which facilitates the evaluation of sleep quality by a single score. Our algorithms compute the duration of each sleep stage to evaluate changes in sleep quality between different nights. We validate our methods by referring to the results of вЂњFitbitвЂќ and subjective feedbacks from volunteers on quality of sleep. The proposed algorithms use only acceleration data from non-dominant wrist, resulting in a classification into 4-sleep stages (вЂњawakeвЂќ, вЂњlight sleepвЂќ, вЂњdeep sleepвЂќ and вЂњREM (Rapid eye movement)вЂќ) for overnight sleep. These features may make your device more versatile, but they often increase the price-point.In this paper, we present several original methods for classifying sleep stages, including threshold based and k-means clustering based methods. Fitness wearables can perform other health-related functions like activity tracking, menstrual cycle tracking, GPS coaching, etc. Most fitness trackers come with sleep analytics, but it depends on whether or not youвЂ™re looking for something thatвЂ™s designed specifically to be a sleep tracker. Some wearable devices also have vibrating alarms which are less jarring than a loud noise and donвЂ™t disturb your partner. Smart alarms wake you up at the optimal time each morning by using data to figure out when youвЂ™re in the middle of light sleep. If you want a sleep tracker that tracks the sleep of both you and your partner, you may want to look for an under the mattress tracker that comes with two sensors. Some users find wearables to be irritating at night, while others like wearables because they often provide more than just sleep data.

It really depends on what youвЂ™re comfortable with. There are two main types of sleep trackers on the market: wearables (rings, watches, bracelets, etc.) and under-the-mattress trackers. To help you decide, we compiled a list of the best sleep trackers on the market.

Once that data is collected, youвЂ™ll be able to make adjustments to improve the quality of sleep youвЂ™re getting.Д¬hoosing a sleep tracker can be tricky since there are so many options. Sleep trackers monitor your sleep patterns for a clearer picture of how much quality sleep youвЂ™re getting. It can be hard to determine how much sleep youвЂ™re getting each night, which is why it may be helpful to invest in a sleep tracker. Getting a good nightвЂ™s rest can help fight off illness, keep you alert and focused throughout the day, and lower the risk of cancer, diabetes, and coronary heart disease. If you find yourself waking up tired and groggy each morning, you might not be getting enough quality sleep. Best contactless option: Sleepscore Labs Sleepcore Max.Best for sleep coaching: Beautyrest SleepTracker.Best fitness tracker: Garmin VГvosmart 4 Activity Tracker.Best smartwatch: Fitbit Sense Smartwatch.Best for couples: Tempur-Pedic Sleeptracker.Best for tracking other health concerns: Sleepon Go2sleep Tracker.

Best under-the-mattress tracking pad: Withings Sleep Tracking Pad.

Wrist sleep monitor