Fun Fact Friday (#23)

Fun Fact Friday is a meme hosted by Lettora at I’m Booked! If you’d like to join and do your own Fun Fact Friday, just ask! At I’m Booked! Every week we’ll give you five new, fun facts.

This week’s five facts: 

1. A violin contains about 70 separate pieces of wood

2. A hedgehog's heart beats 300 times a minute on average

3. Human thigh bones are stronger than concrete

4. A hippo can open its mouth wide enough to fit a 4 foot tall child inside

5. A sneeze travels out your mouth at over 100 m.p.h.

This week’s five facts:

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