Hello I appreciate your concern for losing bad fat and to gain healthy weight Please.follow these guidelines Avoid fatty fried spicy and junk food like pizza burger and high calorie food Have plenty of fluids including fruit juices and lemon water Have adequate amount of dietary fibers which absorbs bad fat from the intestine Have fresh fruits and steamed vegetables You should do aerobics and abdominal wall exercises by moving belly in and out. Hope this answers your question follow up questions are most welcome regards