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With just four days left before the resident slimmers return to the real world, they're keen to do all they can to shed the extra pounds.
As well as electric shock treatments and tapeworms Sir Roy enlists the help of hypnotist Pete Cohen and his revulsion therapy to prevent the return of old junk food habits.
And in the moment everyone's been waiting for, Sir Roy reveals which of the three period diets has delivered the best results.
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