If you want to explore this in yourself consider getting a continuous logging SpO2 sensor. Wellue makes good ones, I had good luck using an O2Ring to understand my own obstructive sleep apnea. It logs your blood oxygen saturation every couple of seconds and is easy to export data from.

Note fast sampling is important. Most SpO2 sensors are designed to give a reading once every 30 seconds or so, at the best. They tend to average the sample taken over that time. You want to catch the momentary dips between breaths. (For instance I don't think the Apple Watch blood oxygen sensor can do this.)