A 1-day diet plan for weight loss is very challenging to follow. It is important to avoid foods that contain a high amount of calories, like pizza, burgers, cold drinks, potatoes, sugary items, oily foods, and meat (buffalo flesh). There are many foods that are good for the 1 Day Diet Plan for Weight Loss, like almonds, juices, broccoli, vegetables, healthy snacking (Chiwda), and meat from goats, chickens, and fish, because they have protein and healthy fat that are beneficial for the body.