As you\’re developing your program to achieve a \’flat stomach,\’ here\’s something to mull over: It is not biologically possible to achieve a completely flat stomach. This is because the muscles are not designed to be flat, but rather, to be rounded. What you can do is get rid of the fat that makes that rounded shape more pronounced. But to do so requires a loss of a significant number of calories. So as you\’re exercising, remember that a change in diet is also going to be needed. With that out of the way, however, here is one of the most popular abdominal exercises for strengthening that area as well as losing calories: the time honored Sit-ups. Here\’s the correct way to do a good sit-up.

First, lie on a comfortable spot on the floor, and either have someone hold your feet or hook the toes under a heavy piece of furniture. Now bend the knees at a comfortable angle, making sure you keep them bent throughout the whole sit-up routine. Put your hands behind your head, interlocking the fingers. Using your abdomen as much as possible (and your arms as little as possible), curl your head, shoulders, upper and lower back slowly off the floor until the torso is perpendicular to the floor. Hold this position for about a second, and then slowly lower yourself back to your starting point. Remember not to allow yourself to “jerk″ yourself up with the arms. Repeat this motion until you\’ve completed your set.