Why do we get butterflies?

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Manage episode 225899440 series 1335729
By Discovered by Player FM and our community — copyright is owned by the publisher, not Player FM, and audio streamed directly from their servers.
Why do we get butterflies in our stomach? Why is singing in tune difficult? What does vitamin K do? Is aluminium foil safe? How do you measure metres above sea level? Can cold water make you wee more?

438 episodes available. A new episode about every 8 days averaging 21 mins duration .