'Tis the season for office kitchens filled with holiday pies, cookies, and bottomless bowls of candy. While your sweet tooth may be rejoicing, your brain likely is not. An inevitable crash follows every treat you eat, leaving you feeling irritable, stressed, and foggy-headed. So before you reach for another bite of peppermint bark, consider the following tips on how to resist the seasonal temptations and opt for a snack that will keep your creativity humming all day long.