Headaches Whether you realize it or not, you clench your jaw when you're under stress or anxiety. This puts pressure on the muscles that connect your jaw and your temples and will usually lead to a headache from the tension. Try putting a pencil or a pen between your teeth to naturally relax your jaw. Make sure you don't bite or chew on it though, because you'll be right back where you started. Hypertension New research from the University of Florence in Italy suggests that people who are already on a medication to help lower blood pressure...
