This is great news in the middle of the summer. Having a fan running while you sleep might be bad for your health.
The Sleep Advisor points out that some people might experience allergies from the fan running all night. The fan can move dust and pollen around the room. This is also bad for people who suffer from asthma. An expert suggests regularly cleaning your fan blades to remove any dust from them. Sleeping with the fan on can also cause dry skin. Good usage of lotions and moisturizers can help this.
How do you keep cool while your sleeping?