Lack of sleep behind grumpy couples' fights

A new study has revealed that lack of sleep often makes a person grumpy, which ultimately leads to a fight with their partner.

It showed that 19 per cent 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 per cent admitted that they have left their home unlocked while five per cent have had a road accident caused, in part, by tiredness.