The school nurse calls: Your child is sick. Your car has a flat. Do you feel a headache coming on? Of course. Stress, well, stresses us out. You know the signs: Your shoulders tense, your breath speeds up, your heart races, you clench your teeth, all of which can make chronic pain worse. That can create a cycle: Your stress worsens your pain, and your pain stresses you out. Read on to learn more.