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Old 06-05-2012, 06:37 PM   #1
Georgia Guy
Member Georgia Guy is offline
Join Date: Sep 2011
Location: McDonough  GA
Posts: 26
Oyxgen Dep. Mask

I know this is an old topic, but how long do you have to use an oxygen deprivation training mask before you start to see the benefits? I have been reading up on them and the reviews are mixed. Some say they work some say they donít, yet those that say they work donít give a timeline.
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