How the smartwatch detect my sleep cycles?

The smartwatch detects automatically that you started a night sleep, based on the movement measurement, and the sleep and wake-up times you provided.

At night, when the smartwatch detects that you started a sleep cycle, it starts the night sleep recording. In the morning, when the watch detects that you are awake thanks to the measurement of your activity, it closes the night recording and starts measuring your activity.

At night, you must wear your smartwatch to let it monitor your sleep. Wearing it will provide the best accuracy, but you can also place it under your pillow. Just be sure to tell the App which position you prefer to sleep in, from the settings page under “sleep mode preferences”.