Graham Cooper sleeps with his head in a bag. The bag has a hose attached to a pump that slowly lowers the oxygen level of the air he breathes to mimic the agonies of fitful sleep at extreme altitude: headaches, dry mouth, cerebral malaise.
Cooper, 54, an Oakland biotech executive, is acclimatizing, in the bedroom of his second home near Lake Tahoe, for an attempt to climb Mt. Everest in May.
He has signed up with an Olympic Valley-based guide service whose founder, Adrian Ballinger, is breaking with decades of tradition to create what he believes are better and more ethical ways to climb the world's tallest mountain. |
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