Operation Ouch stars Dr. Chris and Dr. Xand are treated to their very own song on CBBCs Hacker Time. For more fun, CBBC games and great makes visit .\r
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Twin doctors Chris and Xand Van Tulleken experiment with their core body temperature. Watch more great Operation Ouch! clips on the CBBC website .\r
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Is it safe to drink urine? Dr Chris Van Tulleken and Dr Xand Van Tulleken from CBBCs Operation Ouch find out, so you dont have to! Yuck! Dont try this at home .\r
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Operation Ouch! Is the two times BAFTA award winning medical show for CBBC that is back for its fourth amazing series, check out this trailer! Watch more great .
