Huff and puff

I discovered recently that really focusing on my breathing helps me to get through a run. And by "really focusing", I mean "forcefully blowing out breaths before taking the next one". I probably look pretty crazy, huffing and puffing along the street, and I hope no one who sees me will worry that I'm overexerting myself. (I also tend to get really red when I exercise, so with my luck someone will call the EMTs if they happen to look out a window and see me huffing and puffing, red faced, as I go by!)