I decided to conduct an experiment with my vivoactive 4s.
I was concerned about the lack of deep sleep I was getting.
I decided to wear my watch on my right wrist instead of my left wrist when sleeping. I had a funny feeling maybe my watch was picking up my partners movements during sleep. He sleeps on the left of me,
I have been doing this for the last three nights and more deep sleep has been recorded on those nights.
I wonder if partner disturbance does affect the recording of deep sleep?