I recently read an article about sleep patterns in animals, and it was fascinating to learn that some animals have bi-phasic sleep patterns, meaning they sleep in two phases instead of one long stretch like most humans. It got me wondering why these animals have evolved this way and what advantages it might give them.
In: Biology
Spend enough time sleeping outdoors without lights, and watch your sleep pattern shift to biphasic.
[https://en.wikipedia.org/wiki/Polyphasic_sleep#Ekirch’s_analysis_of_biphasic_sleep_in_the_pre-industrial_era](https://en.wikipedia.org/wiki/Polyphasic_sleep#Ekirch’s_analysis_of_biphasic_sleep_in_the_pre-industrial_era)
Source: long distance hiker
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