The husband and wife human cannonballs

Last updated at 16:17
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Watch the human cannonballs in action

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.

They 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.