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.
The nonsurgical treatments for obstructive sleep apnea include behavior therapy, including weight loss, medications, dental appliances, continuous positive airway pressure, bi-level positive airway pressure, and auto-titrating continuous positive airway pressure.
Sleep Disorders and Hypersomnia Treatment. Treatment for hypersomnia -- excessive daytime sleepiness -- depends on the cause of the sleep disorder. For example, if you are diagnosed with sleep apnea, your doctor may prescribe a treatment known as continuous positive airway pressure (CPAP) to use when sleeping.