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Show Yawn for You Health. ' Doctor Naegell, professor of medicine medi-cine at Liege university, commends the practice of yawning as a physical tevlver. A good yawn, the professor maintains, is excellent for tho lungs, and for all the breathing organs as well. Hut there Is an art In yawning, he says, just as there Is an art In breathing. Every yawn should be as deep as possible, so as to bring all the muscles of the throat and chest Into action, and also to till the lungs with a current of fresh air. Doctor Nae.ell has Known of tunny eases In which a sore throat lias lieee alleviated by persistent yiuum j ..i the London Chroulei. I |