While sleeping

While sleeping, one man in eight snores, and one in ten grinds his teeth.

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Left handed

About 10% of the world's population is left-handed.

Number of bones

You're born with 300 bones, but by the time you become an adult, you only have 206 (as they grow some of the bones fuse together).

Allergic to milk

More people are allergic to cow's milk than any other food.

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