This probably isn't news for any new parents.
New figures have shown that new parents get fewer than four hours sleep a night, which works out as a loss of half a year's worth of sleep by the time their child is two.
The constantly increasing 'sleep debt' leads to permanent tiredness, mood swings and depression. It can also lead to couples arguing several times a week, which can lead to a marriage breaking down.
Experts believe adults should get five hours sleep uninterrupted every night in order to properly function and concentrate.
This number can vary between individuals, with some needing more and others less. However, the study of 1,000 adults showed that two thirds of parents of babies and toddlers get less than four hours a day, whilst 12% get fewer than two and a half hours.
The study also showed that a third of new parents admitted to arguing at least five times a week, and one in 20 couples are forced to separate because they're just to exhausted.
The survey was carried out by the Silentnight bed company.
Source: Daily Mail