Yeah, I have it, and have slept much better since getting the CPAP machine.
I picked up the sleep lab monitor this morning. Sensors for chest breathing, air flow in the nose and finger sensor of SPO2/pulse. It goes on tonight, return tomorrow. I often wake up multiple times during the night and have to consciously inhale. On some occasions I detect my airway closed. Sleeping on my side avoids the problem, but both shoulders get very sore. Inevitably, I end up on my back with interrupted sleep. The monitor should provide either confirmation or point to another problem.
I tried to reach my best friend from college. He acknowledged having sleep apnea when we were at UCSD. I got a reply from his son. My friend was found dead. Comfortably set in his favorite easy chair. Best guess from the coroner was sleep apnea finally nailed him.