what it’s actually doing is lowering your metabolism rate, so that when u do come off the diet (or lemon juice) you actually burn off energy or fat slower. resulting in putting more weight on after you go back on normal food. problem with metabolism rate is that it drops fairly fast but picks up very slowly as the body’s way to ensure survival in times of no food. resulting in putting on weight easier for a longer time after the diet (and thus eclisping the weight people lose on these diets which is essentially just fluid loss rather than fat loss. and it is rather easy to replenish body fluids)i havent looked properly but essentially the salt fluid you take is just what people use before they do endoscopies.

even the burger u showed in that pic looks lean and healthy by any standard. just dont eat too much. japan food is usually healthy.