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.
Sleep apnea: Causes, Symptoms and Treatments. Sleep apnea is a common and underdiagnosed sleep disorder in which an individual's breathing repeatedly stops and starts during a night of sleep. Symptoms include daytime sleepiness, loud snoring and restless sleep. Sleep apnea is easily diagnosed with an overnight sleep study.