Lady fired out of cannon
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Woman fired out of cannon!

4 September 2013 Last updated at 17:16 BST

Fired from inside a cannon and reaching heights of over 20m, this is one stunt where you've got to have a head for heights.

Human cannonballs have been a feature of circuses for nearly 150 years, but today there are just a handful of performers left.

This husband and wife duo, Robin and Chachi, travel the world showcasing their exhilarating stunts and spend hours before each performance rehearsing and perfecting their highly skilled act and only ever work together.

It takes years of practise to get it right, and is definitely something you shouldn't try at home.