How to get flat tummy? is it possible to get flat tummy in 15 days?

How about 15 weeks?: One can't target weight loss from a specific part of the body, but losing weight in general will help. One needs to burn more calories than he consumes. Watch your diet - eat healthily, cut out junk food, and exercise several times a week. If your stomach is what you're unhappy with, tone up the muscles. Sit-ups are a good way to start. Anything that works the abdominal muscles will add tone.