It takes more muscles to frown than it does to smile - around 43 grumpy muscles to 17 happy ones!

It takes more muscles to frown than it does to smile – around 43 grumpy

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The eye is the fastest muscle in your body – hence why when something

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Spectacles had been treating long-sightedness for around for 300 years

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Our eyes remain the same size from birth onward, but our nose and ears