Yes! Eat breakfast but forget the breakfast bars unless there's no way in the world you'll eat anything else (like real food).
Eating every 3-4 hours keeps the level of sugar and insulin in your blood stable. If you are eating more frequesnt, smaller portions your body can use all the nutrients that it's receiving instead of getting one or two huge meals thrown at it. When all that food hits your system and your blood sugar is already low from not having eaten, your sugars skyrocket (all food, some faster than others, are eventually converted to sugars in your body), then your pancreas goes into overdrive to produce enough insulin to lower the sugar levels. This is a perfect environment for several things to happen: 1) You get fatter on less total food. 2) The constant wear and tear on your pancreas increases the likelihood of type II diabetes if you are prone to it. 3) By the time you eat, you really are very hungry and will eat anything that wanders by...not necessarily good, healthy choices.
If you want a good explanation of the science behind eating small, frequent meals, take a look at the explanations in the
South Beach Diet of Dr. Pamela Peeke's
Body for Life for Women. You may or may not be interested in those programs, but the explanations hold true whether you count calories, do a particular diet program, of just try to eat healthier and move more
Mel