Hi there!
For a healthy body one must keep ones BMI within the normal range and dieting should be about eating healthy with adequate carbohydrates, proteins, fat and plenty of fruits and vegetables to provide vitamins and minerals and not about cutting down on food. For an appropriately toned up body and flat abdomen, one may begin by reducing the subcutaneous fat and increasing the muscle tone. One would need to initially do this with exercises like swimming, aerobics etc that uniformly tone the body; before one can take up exercises that work specifically around the abdomen region like ab-crunches, leg lifts, side-crunches etc. You may like to join a gym or aerobics for the same. It is also essential to rotate between various exercise regimens like swimming, biking, jogging, aerobics etc. One must also understand that nothing works like magic and the toning may take a few months to be visible.
Hope this was useful.
Take care!
I sent you a message about an exercise program