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.
Obstructive sleep apnea (OSA) is clinically defined by frequent episodes of apnea and hypopnea during sleep. Treatment for OSA is designed to alleviate symptoms of daytime somnolence, fatigue, irritability and ultimately reduce the incidence of apnea, hypopnea and arousals caused by these events.