When both couples slept less the night before, they tended to behave more negatively during the conflict
And the physical effects of a fight when you’re zonked can be especially dangerous, new research from The Ohio State University Institute for Behavioral Medicine Research suggests.
In the study, researchers recruited 43 couples to come to their lab, where they answered questions on their sleep habits, had blood samples taken, and then tried to resolve a conflict with their partner.
When both couples slept less the night before, they tended to behave more negatively during the conflict—say, with more hostility, criticism, contempt, withdrawal, or nonverbal issues like glowering or eye-rolling.
And for every hour of sleep lost from participants’ norm, their levels of two known markers of inflammation rose by six percent following conflict.
That’s important, since the amount of sleep didn’t affect markers of inflammation that morning—it only became significant once the conflict began.
This suggests that short sleep messes with your body’s response to stress, making your inflammation levels rise in response to an emotionally-wrought situation, the researchers believe.
And that can be a health risk: Higher levels of these inflammatory factors have been linked to a higher risk of heart disease, diabetes, and arthritis, among other conditions, according to a news release.
The good news is, there seemed to be a protective effect if even one partner was well-rested: That tended to be enough to neutralize disagreements started by the sleep-deprived partner, the researchers say.
That’s just one reason you should always shoot for at least seven hours of shuteye a night. But if you find yourself extra cranky with your partner on a day when you’ve skipped on sleep, just make sure you’re not saying these 10 things that you should never utter during a fight.