Anecdotal evidence seems to prove that once you have children, you will never sleep again, ever.
Whether it's manic teething cries keeping you up, nightmare-induced bed-sharing, fearful nights knowing they are probably in a field chancing it with alcohol poisoning, or whether you're worried about their new job.
Children are good for so many things.
We can't really think of what those are after that list, but yeah, there definitely is a reason we keep popping them out.
But, one of the major drawbacks is, as we said, that you will maybe be able to sleep when they are about forty, maybe.
And it turns out (more good news about your life choices), it's worse if you're a woman!
According a new study, conducted by the American Academy of Neurology, having children was the largest factor in someone not having enough sleep.
Researchers also looked at age, race, education, marital status, income, body mass index, exercise, employment and snoring as possible factors linked to sleep deprivation.
But it was kids that was the defining factor.
'Among the 2,908 women aged 45 years and younger in the study, researchers found the only factor associated with getting enough sleep was having children in the house, with each child increasing the odds of insufficient sleep by nearly 50 percent.'
Yep, with each child you get 50 percent less sleep.
Shall we just take a moment to pray for the women with more than two kids?
Out of these women, 48 per cent of those with children reported getting at least seven hours of sleep, compared to 62 per cent of those without children.
This means that women with kids feel tired two weeks of the month, opposed to a week and a bit for women without.
And men, well, as the study says, 'Having children in the house was not linked to how long men slept.'
As we all know, sleep is very important for lots of reasons, it can affect your mood, your weight, your general health and more, so if this isn't the perfect excuse to leave your kids with their dad for a couple of weeks every now and then to get some kip, we don't know what is.