The DRS stands for Drag Reduction System, which enables a car to open its rear wing to limit the downforces on the car. This increases the car's theoretical performance and in theory facilitates passing.
Sleep apnea facts. 1  Sleep apnea is defined as a reduction or cessation of breathing during sleep. 2  The three types of sleep apnea are central apnea, obstructive apnea, and a mixture of central and obstructive apnea.  Central sleep apnea is caused by a failure of the brain to activate the muscles of breathing during sleep.
Two of the most widely used and most effective are continuous positive airway pressure (CPAP) and dental appliances, or mouth guards. CPAP (Continuous Positive Airway Pressure) The most effective treatment for obstructive sleep apnea, CPAP blows air down your throat at night to keep your airways open while you sleep.