When Colin Martinez turned 43 a couple of years ago he was living under a bridge in Denver. By his count, he had devoted 31 years to getting wasted. "I smoked crack or freebased for 16 years," he says. "I injected heroin, injected cocaine, snorted cocaine and heroin, popped pills, smoked opium, smoked pot and hashish. I took anything—a lot of it on the same day." He worked off and on after quitting high school in the '70s. He also married and had several kids.
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