If you suffer from allergies to dust, then I hereby excuse you from your bed-making duties. It turns out that a study from London's Kingston University shows that dust mites need humidity levels above 50 percent in order to survive. This means that a neat bed traps the moisture in that those pesky mites need in order to thrive and multiply. An unmade bed, on the other hand, is too dry for those little suckers. Try to remember this little tip in the upcoming Summer months when the air is especially humid. So leave your covers alone in the morning, and you'll have less dust mites living in your bed. Who knows? Not making your bed in the morning may even save you time for breakfast.