I have tthe benefit of a smart watch, so I know my stats quite well. Over the long term, I average 13 breaths per minute, or 18,720 breaths per day. That translates into $936 per day. When not injured, I average 22,000 steps per day, which would get me $5500 per day (currently injured, so no running, so I’m down to 12,000 steps or $3000 per day). Breathing would win only if I averaged fewer than 3744 steps per day. I think I get more just walking to my corner newsagent and back.