We've often heard the advice to make our bed every morning. There's even a well-known book inspired by a hit YouTube video, called "Make Your Bed: Little Things That Can Change Your Life...and Maybe the World."
When you tidy up your bed soon after waking, the moisture that has built up overnight gets trapped within the sheets. This creates a perfect habitat for dust mites to multiply.
These dust mites are potential triggers for allergies and asthma. Therefore, leaving your bed in a more natural state could decrease the mite population and be better for your health.