This week, with the help of our highly trained 'ring master' Lila Lifely, Chris and Jonny's challenge was to master the nerve-jangling Circus Arts of balancing on a wire, walking on stilts, and flying through the air on a trapeze.
The boys headed down to Circus Space, a leading circus training centre based in East London, where they were assessed on balance, flair and their ability to stomach the three vertigo inducing stunts.
Watch the video by clicking play above to see how they got on, and discover which of them was triumphant.
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