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Being on all fours seem impossible. >> that is okay. we can do something different. >> wait. do over. >> here and -- >> reporter: oh, no, we are getting complicated now. childs play for these guys. for me, not so much. they say practice makes perfect. maybe with a little more practice i could be one of the team -- or maybe not. cecelia vega, abc news, london. >> some of the things are tough. a tough moment there. >> i watched the trampoline. >> i didnt know it was out there. >> i didnt either. p...