Late night, dreams of that horror movie you shouldn’t have watched, cats sleeping on your face, now the smallest member of your family wakes you at 5am.
It used to be such a reasonable time when you had no progeny, perhaps some internal body clock changed when they were born?
Buddhist monks wake with the sun, granted they dont have alcohol but many enter sleep at midnight.
When they rise thet get on with it, I doubt they lay in bed ruminating about the day to come (perhaps existence).
Be like the buddhist monk, get on with it.