I’m waking between cycles, not because of apnea; and apnea shouldn’t prevent getting back to sleep afaik - it just prevents deep sleep and leaves you less reste

I’m waking between cycles, not because of apnea; and apnea shouldn’t prevent getting back to sleep afaik - it just prevents deep sleep and leaves you less rested. I think my sleep hygiene’s been ok. The one cause that seems most likely to me is a decrease in exercise (due to an injury).