Subject: RE: Exhaling while running & swimming TriRSquared - 2009-04-08 9:14 AM gsmacleod - 2009-04-08 8:30 AM Unless you have compromised lung fucntion, your lungs are never going to be the weak link. That's a pretty bold (and in my opinion, incorrect) statement. I think that a lot of people who are getting into a sport like running would say that their cardiovascular system is the limiting factor. Think about kids running. They get short of breath long before their legs get tired. ETA: I guess I should have said my cardio-vascular system was the weak link to be 100% accurate. However my opinion above stands. Shane is correct, and your stated which I bolded is correct. The lungs/oxygen are not the issue. The ability of your cardio system to distribute the oxygen to the muscles is the problem. Again, unless you have a severely compromised lung capacity, your ability to take in air is not the issue. This is why hypoxic swim sets and "deep breathing" techniques are bullsh-t. Yes, teaching yourself how to relax through breathing is important. As a martial artc enthusiast in my previous life we did a lot with that. But you cannot "train" your lungs to be more efficient with the way they work. You can train them to increase the capacity (VO2 max. numbers ) through exercise. Again, if you are not getting enough oxygen to your muscles, your body will try to take in more air. It has nothing to do with excess carbon dioxide ......... Edit: If you are holding your breath, then yes, you will build up CO2 because it has nowhere to go. Edited by Daremo 2009-04-08 8:37 AM
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