There seems to be some biological explanation as to why some people are night owls – our ancestors had to make shifts during the night for safety, for example. But sometimes it’s just habitual.
I’ve changed sleep schedule a few times in my life and I’m as much of a morning person as a night person, provided that I stick with the schedule for long enough (the first few days are the hardest). By moving my late night productive hours to the morning I’ve lost nothing and vice versa. I suspect that many are like me but just never got the opportunity to change their schedule to see how well they adapt.
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