Raw Vegetables
Why they’re good for traveling: Their fiber provides you with energy while keeping your blood-sugar levels stable (read: no midafternoon crash). The carbohydrates will provide your brain with the fuel it needs to function at its peak.
Eat this: Slice up some celery or bell peppers before you leave home, or grab a bag of baby carrots at the grocery store on your way to the airport (or anytime you find a town along the highway with a grocery store).