dr. bernstein diet

Hello! Can somebody explain to me the way dr. Bernsteins diet works? I heard that there is no need for exercise!

If I got it right, you are supposed to get some injections that contain vitamins that help us break the fat. They are B6 and B12, and you need to have them injected 3times/week. And then you loose 4-5 lbs a week. However, there are food restriction. You will get a lit of food you are not allowed to eat, and those you should eat. However, there is a big price that goes along with the diet. You usually take around 900 calories per day while on a diet.