The attention span of cats is noteworthy. They can focus intently for what seems to be minutes on end without even blinking (it seems). This is remarkable to me. And... they never rush when they are just viewing their surroundings. They will slowly, deliberately pan from one item to the next that catches their (eye or ) interest, which usually doesn't take much. So they look (at something) and really focus on it and then just as easily, pan to the next item. This could go on for hours. That is a cat's life.
Do you suppose cats focus on their breathing when they are engaged in this intense observation process? Or do they like us, just rely on the autonomous system to handle the breathing. Perhaps their breathing is naturally synchronized to their body speed, that is, fast moving cat means fast breathing. And it follows; cat at rest - breathing is restful. Wow, that describes cat breathing pretty good - restful!
That's my point this time, when doing nothing else, spend just a little time thinking about breathing restfully. Appreciate your breathing and relax.