Breathing

I've come across the subject of breathing quite a bit lately. Which has made me try to be more aware of mine, not just when working with horses but in everyday life. I found that I hold my breath a lot. I don't realize I'm doing it and I can't say how long I hold it. What happens is I will be really focused on something and sometime in the middle of what I'm doing I realize I'm not breathing. This is something I really need to work on.