“People who think they are going to buy an ‘ab machine’ and suddenly have a ‘washboard’ stomach are misinformed. If you want your abdominal (ab) muscles to appear, you will need to lose total body fat. Studies have shown that doing hundreds…thousands of sit-ups a day has no effect on body fat,” says fitnes trainer.
Sit-ups can increase the size and power of your abdominal muscles but unless you lose excess body fat, you won’t see your abdominal muscles…. there is no such thing as spot reduction!
Most of the models who promote the benefits of abdominal exercise on TV have between 6 and 10 percent body fat — which is a result of heredity, light eating and/or serious aerobic exercise.
Men want to maintain an average of 12 – 20 percent body fat; women, 15 – 25 percent.