Do people concentrate or even aware of how they breath while exercising?
I was out for a run last night, I hate it but want a bit of alternate fitness. I found that I breath low in my lungs/chest. When I breath through my nose and focused on my breathing I automatically lifted and opened my chest. I was able take air in a lot easier and calmer but breathing through your nose restricts the amount of air you can get to your lungs. When reverting to breathing through my mouth I found my chest automatically dropped and had to really focus to lift and open it again.
Now I'll admit, I am slightly over weight but I have reasonable bike fitness and endurance. I have a touch of asthma which is medicated and under control but limits my top end exertion, possible fitness though. I have been biking since for ever it feels but only recently began to focus on increasing fitness. Was very fit in my youth. I commute to and form work 10 miles each day but sit in front of a computer all day.
So any thoughts on this? Any professional advice very welcome and appreciated.

