People are usually shocked to find out that a lean desirable physique is really won in the kitchen and not in the gym. A lean midsection is made possible by losing body fat from the abdominal area. Doing numerous sit-ups will not drop body fat; sit-ups develop the muscle under the body fat. As long as you carry fat in that region you will not be able to see the muscle under the fat. Consuming the correct types of food choices and adding in some cardiovascular exercise will help you lean out and in time allow those muscles to show through. It is very common for our competitive clients to not add in any abdominal training as diet is the key to revealing a set of defined abs.