1. Paleo Diet
Megan Fox is rumored to have followed this diet, also called the Caveman Diet. On the Paleo Diet, you’re supposed to eat like your ancestors, which means eating a lot of animal protein, “natural” carbohydrates (essentially fruits and vegetables) and some nuts.
The Paleo Diet is high in protein and fat—and there’s an emphasis on getting health-sustaining omega-3s into your diet from oily fish such as wild salmon, game meats, free-range chicken and grass-fed beef, all of which can be pricier than their farmed or conventionally raised counterparts.
What’s interesting about this diet is that its phases are the opposite of most other diets: they get more restrictive as you progress. For example, at the first level, you get 3 “open” or cheat meals a week, plus what they call “transitional items,” such as condiments to flavor food. But when you move to level 2, you only get 2 “open” meals a week and you phase out the transitional items. This type of transition might make the diet easier to stick to.
Next: What’s Missing From the Paleo Diet? »