What to eat: What you need to do is add more protein to gain muscle and lose all the fat. Here are some of the basic elements of protein filled, kerotin you can add to your diet: Lean beef : If you add lean meat in your diet, you are guaranteed to see amazing changes in your body. Lean beef is known for kerotin s amount of protein and muscle strengthening amazing property. kerotin can help you build lean muscle and burn fat easily. chicken.