This one may be a little bit of a stretch, but a healthy smoothie is a fantastic snack. Villacorta suggests adding Maca powder to your shakes. “Maca tends to help people concentrate and also boosts energy levels,” he says. If you don’t have a blender in your office kitchen, you can easily whip up a smoothie at home and bring it with you to work. If you do this, Villacorta suggests drinking the smoothie as your morning snack, though it should keep all day in the refrigerator. If you need some ingredient inspiration, check out our smoothie guide.