Marital spats can be a literal pain, according to new research from Northwestern University.
In a study that spanned two decades, researchers had married couples come into a lab every five years to rehash their common disagreements in front of a camera.
Experts studied their conversations, taking note of their facial expressions, body language, and tone of voice. Then they surveyed the couples about their health.
Over the 20-year period, men who argued in certain ways were more likely to wind up with health problems.