If your momma sent you off to school with a hearty breakfast, she had good reason.
Skipping breakfast was also associated with smoking, watching TV, eating a less healthy diet and being inactive. Even after controlling for sociodemographic factors (like marital status and education), smoking and physical activity, subjects who skipped breakfast still had bigger waists.
Skipping breakfast may pack on the pounds by altering your metabolism to store more fat, or leading you to eat more later. If you want a trim waist, wake up in time for breakfast, just like your momma made it!