2. Greek yogurt
Try to go Greek for a while and see the effect. Greek yogurt is a wonderful snack. It is readily available at any supermarket. It costs little and there are a few varieties of it. Pick your favorite and enjoy a peaceful life. Yogurt contains probiotics. The active bacteria that you find in this food strengthen your immune system. They reduce the risk of developing bad bacteria and provide your body with calcium and potassium. The latter two minerals improve your mood.