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.
Therapies. 1  Treatment for associated medical problems. Possible causes of central sleep apnea include heart or neuromuscular disorders, and treating those conditions may help. 2  Supplemental oxygen. Using supplemental oxygen while you sleep may help if you have central sleep apnea. 3  Adaptive servo-ventilation (ASV).