Why is winter so hard?
With the advent of electricity, our modern lives no longer follow the rising and setting of the sun as they did in earlier, simpler times. Historically, with shorter days, our activities were fewer in the winter. In the 21st Century, our “days” can go on all night thanks to electricity and our busy schedules. The change in rhythm from the natural rhythm of day and night with seasonal changes is new to our bodies in the scheme of biology, having only been an option for the last few hundred years.
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