A Breathing Technique Offers Help For People With Asthma
nytimes.com:
Hyperventilation -- breathing too fast and too deeply -- could be the underlying cause of asthma, making it worse by lowering the level of carbon dioxide in the blood so much that the airways constrict to conserve it.







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First Posted: 11- 5-09 02:20 PM | Updated: 11- 5-09 05:23 PM