You're rarely going to hear "lose weight," "six-pack," and "Chipotle" in the same breath, but this isn't your average weight-loss plan. This "diet" works with other fast-food places, but Chipotle is absurdly convenient (it had nothing to do with this article, by the way).
Aside from being absolutely delicious, Chipotle happens to have one of the best ratios of calories-to-protein among fast-food joints, it's easy to calculate your own custom burrito, and you can eat it repeatedly without too much boredom.
Before you make the joke that everyone is going to make, no, this has nothing to do with contracting E. coli and dropping a bunch of water weight fast. Let's look at the science and how you can eat glorious burritos en route to getting abs.
Wait, how does this actually work?
The science is actually quite simple. When people say "six-pack," they're referring to visible abdominal muscles, or "abs."
Good news -- you don't have to do hours of crunches to build these muscles, because everyone has them naturally. The bad news is that no number of sit-ups will make them visible, because visibility is determined by the layer of fat that exists over your abs.
This means that if your six-pack isn't visible, the primary thing you must do is lose weight. From a physics perspective, weight loss is simple and occurs when you eat fewer calories than you burn. It has nothing to do with lowering carbohydrates (although this may help some people), "fat-blasting workouts," or stocking up on organic food. This is why a properly dedicated and knowledgeable person can lose almost 30lb in two months on an all-Twinkie diet.
However, there's a catch. When you see the number on the scale go down, it doesn't necessarily all come from fat -- the weight you lost may have been glycogen (carbohydrates stored within your muscles), fat, or muscle. To achieve a six-pack, you don't just want to lose weight; you want to lose fat.
In order to do this, you need to consume an adequate amount of protein. A good rule of thumb is to consume the amount of protein in grams as your target body weight. For example, if you want to get to 160lb, you should consume at least 160g of protein per day.
What does your body-fat percentage need to be until you start seeing a six-pack? Well, it varies depending on everything from the amount of muscle mass that you have all the way to your current room lighting. As a rule of thumb, though, men need to be under 10% body fat and women need to be under 20%. Here's how Chipotle can help you get there.