I am firm believer in deep breathing. It is the cheapest way to relax when you're stressed out. Unfortunately, stress can bring on shallow breaths. These little gulps of air decrease the amount of oxygen in the blood. Ann Pardo, a director at Canyon Ranch spa, told Fitness magazine that shallow breathing can even affect the skin, making it appear "dull and sallow." Don't let the end-of-year stress wind you up and negatively impact your skin tone. Take the time to breathe deeply when you feel the tension coming on. Inhale slowly for five counts and exhale in the same manner. You won't only look better, but you will feel better, too.