Several nights ago as I was having trouble going to sleep I started doing what I often do to bore myself to sleep: I counted my breaths. After I reached about 30 I noticed that I was feeling like I wasn’t getting enough oxygen. Uh-oh. I tried breathing more deeply but it wasn’t enough. I still felt like I was gasping for breath.

But I wasn’t gasping. My body was just doing its normal breathing. My body said I was fine, it was fine. And yet I had the feeling that I wasn’t getting quite enough oxygen with each breath. Continue reading