The holidays can be fun and festive, but they can also bring complications that send your stress levels soaring. A common physical reaction to stress can manifest in bad posture, or tension in the neck and shoulders, and the pain piles atop the mental effects, and leaves you reeling. Some deep breathing exercises can help with both issues. Flatten yourself out when you have a minute, on a couch or bed, and focus on slowly filling and emptying your lungs. It should help.