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. Considered a sleep disorder, apnea literally means without breath.. In sleep apnea, the patient involuntarily stops breathing over and over during the night. Sleep apnea as a disorder can include episodes of a similar condition called hypopnea or slow breathing.. Hypopnea means the patient takes very shallow breaths or breathes at an abnormally slow rate.