Cycling in Sydney Australia
Yes, alright then, you've had a few good ones lately and no-one has acknowledged them, so I give you credit for the RAM.. though really the fish oil capsule was the one that was really inspired.
This is true but there are downsides to this.
The more your force air out of your lungs (down close to your residual volume - RV), the greater you compress all the small airways. In doing this, two things happen; some airways get 'blocked off' so the extra effort is a waste of time, and; while you do 'gain' from the extra recoil of the lungs & chest wall, this is energy you have to put in anyway, so the work of breathing isn't any less - you can't get something for nothing! :)
You will find that when exercising vigorously, you will get close to this limit anyway. The best advice is to just let your body do the work and try not to think about it too much. :)
I meant 'breathing out fully' rather than 'forcefully'.