If you’re a single man, you may go to bed with a clear conscience but you rarely sleep on clean sheets. At least, that’s according to a new study, which found that single men on average only clean their bed sheets four times a year. In comparison, single women change their bed sheets every two weeks. And while cleanliness numbers surge for married couples, it appears the credit for the median boost for guys primarily belongs to women. In fact, it may be the men who are dragging the women down, as the average washing frequency amongst couples is once every 2.3 weeks, with women doing 81 percent of the washing. And as “How Stuff Works” points out, the average person spends about a third of their entire life in bed. In other words, the old saying, “ As you make your bed, so you must lie on it,” may have more meaning than originally intended. But are these single men literally sleeping in beds of filth? Or, are the women perhaps overdoing it a bit? Turns out, it mostly depends on your own standards of cleanliness. Yahoo news Women we need you, to take care of us.