Did you know that the music you're listening to at the moment affects your heartbeat? It's not the same with everyone, but toenails grow slower than fingernails on average, at about half the pace of fingernails. Speaking of nails, as you age, they significantly change. And in case you've been wondering, ears do get bigger with age. Well, not precisely bigger, but both your nose and ears sag as you get older because your skin loses elasticity. 

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