The Biggest Loser trainer Jillian Michaels broke the rules of the reality show… costing her team a 4 pound disadvantage during the weigh-in of last night's episode-- she admitted to giving caffeine supplements to each member of her team without a doctor's permission....

Matt feels vindicated that his theory was right -- CLICK HERE to listen!

News Photo: personality Jillian Michaels poses at the 2013 NBC…

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