What that means is that men benefit from the care that women perform during marriage, whether that's doing the books so he doesn't have to, managing the house so that he doesn't have to and can simply provide a few chores, managing his social life again saves him a lot of time and stress and hundreds of similar things. Women will also manage the diet and the health in some ways, being able to plan for the family activities that might be more athletic for example or more healthy in meal planning. Food for thought.