Need a mental pick-me-up so you can make it to the end of your workday? You probably know that certain foods can help improve your memory and brain processing power. So what should you keep at hand for that mid-afternoon snack? Consider a snack of beans. The humble bean is a fantastic source of nutrients that are critical for brain function. Roasted chickpeas, edamame, or even a trail-mix of black beans and chickpeas are a proven snack that will keep you alert and the hunger at bay until dinner.