A biological necessity (DW#692)
Did you know that every single creature that we know of on this planet, sleeps? Even worms?
Matthew Walker, whom we mentioned yesterday, says: "Without exception, every animal species studied to date sleeps, or engages in something remarkably like it. This includes insects, such as flies, bees, cockroaches, and scorpions; fish, from small perch to the larger sharks; amphibians, such as frogs; and reptiles, such as turtles, Komodo dragons, and chameleons. All have a bona fide sleep. Ascend the evolutionary ladder further and we find all types of birds and mammals sleep: from shrews to parrots, kangaroos, polar bears, bats, and, of course, we humans. Sleep is universal."
In other words, living beings are not meant to go on 24/7. We are designed to work best when we get (enough) rest.
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