4. Husbands who help with housework may get more sex.
It's a win-win, really. A report released by the Council on Contemporary Families last year combined several studies that examine men's involvement in childcare and household chores. Among the findings were that men have doubled their contribution to housework since the '60s and the payoff could be more sex.

"I would conjecture that this means that women who don't feel appreciated or supported by their partners feel less sexual towards them as well," says Neumann. "When someone is harboring resentment towards their partner, it kills libido ... i.e., he still isn't picking up his socks even though I've asked him a zillion times to put them in the hamper." You said it, sister!