I read about it here originally: https://news.ycombinator.com/item?id=48243666 https://news.ycombinator.com/item?id=48243666 I haven't read into it much but I

I read about it here originally: https://news.ycombinator.com/item?id=48243666 https://news.ycombinator.com/item?id=48243666 I haven't read into it much but I believe the circular breathing excercises strengthen some of the muscles that tend to relax during sleep so they keep your airway open.