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There was a question about nose strips/nostrils on QI (A show about interesting facts).
It turns out that your nostrils change size through the day. One gets wider as the other gets narrower and vice versa. One regulates the physical functions of your brain and the other regulates your cognitive functions.
So when one is wider you'll be better at maths, spelling etc and, when the other is wider, you'll run faster, jump higher etc.
Nose strips open both nostrils wide so you get the best of both function. Which is why a lot of athletes wear them.
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