Exploring the link between quality of sleep and personal excellence

After years of progress and incredible breakthroughs in all aspects of how the human body works, there are still many things to be discovered. Especially about the brain. One of these things, which I always found fascinating — and a little bit humorous — is why yawning is contagious. We definitely know it is, but nobody knows why. Yet.

What we do know is that, when yawning the brain signals it needs more Oxygen than it gets through normal breathing. This is most often a sign that the body is tired and could use some rest. In all other cases, someone nearby does it first and we simply can’t help it.

What we also know about yawning is that it makes us all look a little bit silly. Just retrieve your mental picture of Arnold Schwarzenegger. Only imagine him yawning. You’re no longer impressed by his muscles; you’re empathizing with the guy for looking a little silly while his brain is getting that extra Oxygen it craves.

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