I heard that in nature, humans were getting up when the sun raises , does that mean that they were sleeping much longer on winter?

Question

I heard that in nature, humans were getting up when the sun raises , does that mean that they were sleeping much longer on winter?

In: 2669

Answer 1

There was an experiment done with miners, they were completely light deprived for, I think, 60 days. During the experiment they found that even with our the light controlling the circadian rhythm, we have an internal system that regulates us. When compared to the sun rise and set, it was found that they all went to sleep a bit after the sun set, and got about 7-9 hours of sleep. All without the sun determining their sleep habits.