Wearables can assist you in determining the stage of your journey, as well as how long you will be in it, based on your heart rate, movements, and variability. During normal night sleep, you will fall into one of three sleep stages: light sleep, deep sleep, or REM (rapid eye movement) sleep.
With the Garmin Smartwatch, you can track your sleep habits. The Forerunner 935 is somewhere in the middle, offering a good mix of features and affordability. The Vivoactive 3 is the most affordable option of the three, while the Fenix 5 is the most feature-rich. The Garmin Vivoactive 3, Fenix 5, and Forerunner 935 all have this feature. There are a few Garmin watches that have the ability to track REM sleep.
