6. Blueberries

Photo Credit: LaStef

The antioxidants and vitamin C contained in blueberries are stress-reducers. Blueberries also have lots of fiber, which is good for digestion. For most people, having bad digestion usually leads to discomfort and grouchiness. I like blueberries frozen in the summer time. They make a great treat for hot days by the lake. They are also perfect in pancakes, with whipped cream, on ice cream, or in a pie. There are so many great qualities in this tiny fruit!