WATCH: The science behind the Ice Bucket Challenge

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We’ve spent the last couple of weeks watching videos of famous people dunking a bucket of ice water over themselves for charity – but what actually happens to their bodies when they do it?

Paolo Viscardi is a curator at the Horniman Museum in London, and was responsible for the “Extremes” exhibition. He’s posted this video to YouTube explaining what happens – before taking part in the challenge himself. Brilliant.

If you’re a fan of Paolo getting cold, check out this video from earlier in the year when he took a trip to London’s temporary ice bar:

James O’Malley