Jillian Michaels, trainer from NBC's 'The Biggest Loser,' answers user-submitted questions about diet and exercise. Here ...
she answers a user who wants to know which diet is the best: low-carb, low-cal or low-fat.
Tags:Which Is the Best Diet,Diet tips,health improvement tips,health tips,ivillage,low-cal diet,low-carb diet,low-fat diet,weight loss,Bob Harper,Jillian Michaels
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