This might shock you, but research shows that having sex generally improves your mood through the next day. And when you feel happier, you tend to be more productive at work and thus more successful. Now there's even more evidence that funny business can be good for business: Researchers asked 159 married people to take twice-daily surveys about their moods for two weeks and published their findings in the Journal of Management. They found that the positive boost from sexy times lasted about 24 hours, and resulted in employees reporting more satisfaction and engagement at work. The effect even lasted after controlling for overall marital satisfaction, so it wasn't just that happy married couples were likely to have more sex and, being blissfully wed and all, just happened to also do better at work. And men and women saw the same effect.