Drinking diets: sometimes to lose weight, you should not eat, but drink!

As you can see from the title, any drinking diet – whether it’s the technique of losing weight on yogurt, on broth, on green tea, on juices or even on the plain water – is based on the use of liquid. And if any food is provided during a drinking diet or anything that gets into the body – should it be exclusively in liquid form? And how long can I keep a drinking diet? And most importantly – what results does this system of losing weight bring?