How many neurons are in the human brain?
The human brain contains about 86 billion neurons.
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- Do ears work while you sleep?
“Your ears keep working while you sleep.”
Reference: Cleveland Clinic
More from this shelf
What is the smallest bone in the body?
The smallest bone in the body is the stapes, in the middle ear.
Interesting fact about albatross naps
An albatross can sleep while it flies. It apparently dozes while cruising at 25 mph.