When you suck on a straw you are usually not using the muscles of your chest but rather the muscles of your mouth. These muscles can create quite a vacuum but they move only small volumes. The muscles of your chest can move more volume but do not create much vacuum. And they are not strong enough for doing much of this kind of work. --- A chest pump would be exhausting... *************************************************************************** PaddleWise Paddling Mailing List - Any opinions or suggestions expressed here are solely those of the writer(s). You must assume the entire responsibility for reliance upon them. All postings copyright the author. Submissions: PaddleWise_at_PaddleWise.net Subscriptions: PaddleWise-request_at_PaddleWise.net Website: http://www.paddlewise.net/ ***************************************************************************Received on Fri Nov 30 2001 - 12:36:38 PST
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