A new study has revealed that couples fight often because of lack of sleep, which usually makes a person grumpy, eventually leading to a fight.
It showed that 19 percent of adults get an average of only six hours' sleep a night instead of the full eight and a third of people take their tiredness out on their partner, the Daily Express reported.
A restless night can also make people late for work and more likely to lose our wallets or phones. And it makes parents more bad-tempered and likely to scold their children.
Six percent admitted that they have left their home unlocked while five percent have had a road accident caused, in part, by tiredness.