Ok, I was thinking about something that I've heard people talk about ...
It has to do with breathing through the nose when you are exerting yourself...
I have been trying to do this on my daily commutes ... however I am not sure if there is a real gain with this technique or not... does breathing through the nose during high exertion force the heart and lungs to increase its capacity due to the restriction of the lower CFM...?
I understand that the body adapts to changes in load, for instance, to increase cardio capacity one can:
1. increase the distance.
2. increase the speed.
3. increase the angle (go up hills/mountains)
All of these things should help to increase lung and circulatory capacity... but can one artificially increase load by depriving the cfm/oxygen that the body can take in by keeping their mouth closed during high load training ? ??