Considered a fad diet by some, it’s not really clear how effective it is because it's supposed to be used while moderating your portions and watching the nutritional composition of the food you eat. Those two things will help even without the step below.

The idea here is that you're supposed to take one, two or three teaspoons of apple cider vinegar with each meal. That’s the byproduct of fermented apples, or, essentially, the soft, squishy brown spots on apples that -- when combined with your meals -- are like coating your burrito with the world’s best anal lube. In one end and out the other in record time.