Having children is one of the most increible things that we, as a species do. However you choose to have them, most of us can agree that parents are heroes.
New parents are often inundated with advice on what to do. In the UK, there is a widely held belief that breastfeeding is best for new babies. Mothers who choose not to or are unable to breastfeed frequently discuss stigma over not breastfeeding their children. Conversely, mums who do breastfeed often face stigma when breastfeeding their children in public.
Apart from the health benefits, one of the most widely circulated arguments in favour of breastfeeding is that it's free. This is particularly convincing to mums from low income brackets.
But history professor Kera Lovell made an incredible point on Twitter which is sure to make us all see the debate through a new, more feminist lens.
The post has been "liked" more than 14,000 times. Mums on Twitter couldn't believe how much time they had spent breastfeeding when they added up the hours.
Remarkably, in Norway, breast milk is counted as part of Gross National Product (GNP), a broad measure of a nation's total economic activity, finished goods and services.
According to Dr Parveen Ali of the University of Sheffield, Islam allows women to charge their husbands for breastfeeding, though it is unclear if this has ever been enacted.
So there we have it. The next time you think of breast milk, or any other part of female labour, as free - think again. Because time is money.