Most babies, whether breast fed or bottle fed, swallow air. The air that is swallowed does not cause discomfort, although it could possibly be enough to fill the stomach and prevent the baby from drinking as much as he needs for complete satisfaction. It is worthwhile to try burping him once or twice during a feeding. If he burps readily, he may then wish to eat more. If he does not burp readily, he has not swallowed a significant amount of air and continued efforts to make him burp are not necessary.