What Does Sleep Apnea Life Expectancy Mean? Understanding Sleep Apnea Sleep apnea, mainly obstructive sleep apnea (OSA), happens when your airway blocks during sleep. This blockage can occur lot of times a night. It interrupts your sleep and cuts off oxygen to your body. The National Institute of Health states https://knoxplfzw.theideasblog.com/31217493/not-known-details-about-sleep-apnea-risks