If you want to get more work done and make more money, you might consider taking a nap during the day instead of trying to sleep more at night. In a study soon to be published in the Quarterly Journal of Economics, researchers at MIT examined 450 low-income workers. They tried to increase the sleep time of these workers, but they observed no benefits in work productivity, earnings, sense of well-being or even lowered blood pressure. On the other hand, those who got short daytime naps improved their productivity and well-being. Often, trying to sleep more at night leads to more time in bed with no real increase in the restorative deep sleep. Consider adding short naps to your schedule to get more done and feel better about your work.