NYU sleep specialist, Dr. Rebecca Scott says going to bed full is worse. That’s because it can cause acid reflux, which can wake you up, or cause restless sleep. But going to bed with a growling stomach isn’t ideal either. Low blood sugar could also cause you to wake up in the middle of the night. So if you’re hungry before bed, eat a very small snack, like almonds or yogurt. The protein will digest slowly, so your stomach won’t rumble – but it won’t be too heavy or fatty and keep you awake.