JohnGottmanconducted a studywhereheinvited 130 newlywedcouplestowhatlookedlike a bedandbreakfast, butwasactually a labwheretheycouldobservethesubjects.
Thestressofbeinginthesameroomastheirspouseandtalkingabouttheirrelationshipcausedtheirsympatheticnervoussystemtokickinandtheyhad a fight-or-flightresponse.