I checked through my Fitbit sleep data, and compared it to evenings I had wine, days I exercised etc, to see if there was anything that correlated with a good nights sleep.
I've noticed that on the evenings I take paracetemol before I go to bed, I'll get around an hour of deep sleep. On the days I don't, I might get 10-15 mins deep sleep.
I know it's not a sleeping tablet so what could explain this?