The holidays are supposed to be a time of joy, but for many people, they can also bring a heavy dose of stress. Between work deadlines, family obligations, travel plans, and financial pressure, it’s no wonder that stress levels tend to spike this time of year. In fact, the American Psychological Association now classifies stress as a public health concern — and for good reason. When stress builds up, it doesn’t just affect your mood. It impacts your body, too. Your heart rate increases, blood vessels ti...