Question: have flat tummy in a week?
Answer: Cut Calories, but Not Too Much. ...  Eat More Fiber, Especially Soluble Fiber. ...  Take Probiotics. ...  Do Some Cardio. ...  Drink Protein Shakes. ...  Eat Foods Rich in Monounsaturated Fatty Acids. ...  Limit Your Intake of Carbs, Especially Refined Carbs.