What type of sleep activity is being tracked? If you wear your device to sleep, it can automatically track when you fall asleep, duration of sleep, duration of light and restful sleep, and when you wake up. Related articles How can I view my sleep history in the App? How can I edit my sleep log? Can my watch monitor my sleep? Will it tell time even if my watch is not connected to my smartwatch? How do I set up and use Google Fit?