![]() However Winter also said that trackers can struggle with determining the stage of sleep a person is in. Chris Winter, Men’s Health sleep adviser and author of The Sleep Solution: Why Your Sleep Is Broken and How to Fix It said that the data sleep tracking devices provide can be useful and that the trackers do a good job of providing insight into a person's sleep patterns over time, such as the total time a person's probably sleeping. Instead, according to Schwartz, "Most sleep tracking devices make some guesstimate as to how much you’re actually sleeping." and that the information the tracker provides to the person using it should be taken "with a grain of salt", but added that the tracker will still "give you something to reflect on". Alan Schwartz, director of the Sleep Disorders Center at Johns Hopkins Bayview Medical Center, said that while sleep tracking devices can be useful for helping a person recognize patterns in their sleep habits, they are not capable of directly measuring a person's sleep unlike sleep study. Īs of 2017, it is estimated that 10% of adults in the United States use a wearable fitness and/or sleep tracking device on a regular basis. Some sleep trackers offer other features, such as "sleep scores" that rank how well a person slept, "smart alarms" that wake a person up within a set period of time based on the circumstances of the person's sleep, and the ability to track the amount of light and/or the temperature in the person's bedroom. Some sleep trackers are capable of tracking the stages of a person's sleep ( light sleep, deep sleep, REM sleep), the length/duration of a person's sleep, the quality of a person's sleep, and the consistency of a person's sleep. Devices capable of tracking a person's sleep include dedicated sleep trackers, trackers that clip onto a person's pillow, smartphones, fitness trackers, smartwatches, and other wearable devices. ![]() A device that tracks a person's sleep is called a sleep tracker. ![]() Sleep tracking is the process of monitoring a person's sleep, most commonly through measuring inactivity and movement. The Fitbit Alta HR, a wearable device capable of monitoring a person's sleep.
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