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Beyoncé. J-Lo. Snooki.

What do all these celebrities have in common? They are all incredibly fit thanks to strict diets and fitness regimens that they are religiously dedicated to. For example, did you know that Megan Fox credits apple cider vinegar for her fast metabolism? Or that Jennifer Aniston does yoga three times a week and pilates once a week, on top of doing 40 minutes of cardio every day?

Perez Hilton has compiled a list of the celebrities with the toughest diets and workout routines. Take a look at the list and let us know which one you think has the most intense diet/workout plan. Just a warning, some of the them are a bit unorthodox, such as Katie Holmes' carrot soup and raw broccoli based diet or Jennifer Lopez's vial of grapefruit extract. Don't just take it from us, take a look for yourself here.


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