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Climbers Summit Mount Everest in Five Days Using Controversial Xenon Gas
(www.smithsonianmag.com)
On May 5, they also inhaled xenon gas, reports the Washington Post’s Cindy Boren. After being lightly sedated at a clinic in Germany, the men breathed in a low dose of xenon gas mixed with oxygen for less than an hour.
So while they still ran bottled O2 on the mountain they did a weird therapy with xenon before getting to Nepal.