I found the attached article interesting, the idea that the sleep cycle was different before electric lights
I notice when we travel, particularly to Newfoundland where we don't have TV, we sleep even better then we normally do.
Sleeping In Two Segments - Business Insider
Generally when we travel we go to bed earlier than we do at home and, though we sleep in our 40“ bed, we always wake well rested.
This winter we'll experiment with going to bed at sunset.
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