Adjustable rear wing -. Drag Reduction System (DRS) New FIA moveable bodywork technical regulations for 2011 have allowed adjustment of the rear wing from the cockpit at any time in practice and qualifying, but only when a driver is less than one second behind another car at a pre-determined point on the track during a race. Braking deactivates the device.
The person with sleep apnea is usually unaware of this. The interruption to breathing can occur hundreds of times a night, resulting in markedly fragmented sleep. As a result, people with sleep apnea feel excessively sleeping during their normal waking hours.
Central sleep apnea is a much less common type of sleep apnea that involves the central nervous system, occuring when the brain fails to signal the muscles that control breathing. People with central sleep apnea seldom snore. Complex sleep apnea is a combination of obstructive sleep apnea and central sleep apnea.