Science of Dreaming
The Infinite Monkey Cage
00:00
The Importance of Sleep
Hibernation is something that animals do to save energy, right? So they cool down their body temperature and don't move. They save energy in the winter when there's no food around. And actually, and fascinatingly, hibernating animals actually warm up periodically. That means their investing energy in order to obtain sleep. Because when they there cool to a certain point, their brains cannot exhibit the activity that they need for sleep.
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