I hiked 800 miles on the AT two years ago. I can vouch for it. I didn't think much of it at the time, but I've heard about this since and it fits. I frequent

I hiked 800 miles on the AT two years ago. I can vouch for it. I didn't think much of it at the time, but I've heard about this since and it fits. I frequently woke up sometime in the middle of the night. Sometimes I'd read for a bit and sometimes I'd just lie there and listen. I just chalked it up to more hours in bed and being really REALLY tired when going to bed, but it makes total sense that the lack of artificial light played a big part.