Climb Higher Than Mt. Everest, Without Leaving Manhattan  Who
knew such extraordinary altitudes could be found, hidden inside
the towers of Manhattan's Flatiron District? But, behind the
nondescript door of a 5th-floor office on 21st Street, heights
as great as the Himalayas are waiting to be scaled. Gizmodo took
a deep breath and visited the atmospheric wizardry of Hypoxico,
makers of high-altitude training facilities for professional
sports teams and the world's top endurance athletes.  Welcome to
Fitmodo, Gizmodo's gym for your brain and backbone. Don't suffer
through life as a sniveling, sickly weakling—brace up and get
the blood pumping! Check back every week for the latest in
fitness science, workout gear, exercise techniques, and enough
vim and vigor to whip you into shape.  The low-oxygen technology
used by Hypoxico has been around, in its current form, for
nearly twenty years; their first patent came way back in 1996,
for implementing the controlled-atmosphere chambers now used in
specialty athletic