The greatest diet on Earth and it's not a joke. This diet is easy and simple. You can eat as many donuts as you want and drink only water. The kind of donut does not matter and you should eat at least two dozen a day. Doctors form the University of Miami say that if you follow the plan, you can lose up to 50 pounds in 3 months. They warn that it should only be used for short term, but like any other fad diet it will lack other nutrients.