Rapid Tone The Subway Diet: People who love eating sandwiches would love taking this diet. The low fat content of the Subway sandwiches will help you to lose weight effectively. So, stay slim while gorging on Subway sandwiches all day!The Slim Fast Diet: A highly-effective and superior weight loss diet, it prescribes substituting slim-fast drinks as your breakfast and lunch, The Apple Cider Vinegar Diet: This diet is a sensitive diet and hence it needs to be followed carefully. It is essentially a low-calorie diet that results in faster weight loss.