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So you get the sunlight when you are about to go to sleep and none when you wake up. That doesn’t sound healthy.

Exercising in the sun for 3 or 4 hours a day doesn’t sound healthy? Compared to the guy who planned to spend that time in the pub?

If that means that bedtime falls within 3 hours of the sunset then so be it. I’ve survived this long at least.

I find that physical activity promotes sound sleep.