Cheryl Dinges is a 29-year-old Army sergeant from St. Louis. Her job is to train soldiers in hand-to-hand combat. Specializing in Brazilian jujitsu, Dinges says she is one of the few women in the Army certified at level 2 combat. Level 2 involves a lot of training with two attackers on one, she explains, with the hope of "you being the one guy getting out alive."
Published: May 2010
Sleep

The Secrets of Sleep
From birth, we spend a third of our lives asleep. After decades of research, we’re still not sure why.
Photograph by Maggie Steber

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