CNN Hero Nick Nisbet overcame his addictions by becoming more physically active . He now runs a nonprofit in Boulder to help other ex-addicts to do the same . CNN builds friendships , positive support for those trying to stay sober . Denver ( CNN ) -- Do you know a hero ? Nominations are open for More than 4,700 CNN Heroes .
CNN Hero Nick Nisbet overcame his addictions by becoming more physically active . He now runs a nonprofit in Boulder to help other ex-addicts to do the same . CNN builds friendships , positive support for those trying to stay sober . Do you know a hero ? Nominations are open for More than 4,700 CNN Heroes .