Steve Otto, 50, of Berthoud, jumps into the 36-degree Boulder Reservoir during the annual Polar Plunge on Jan. 1, 2012. The event, sponsored by the Young
Steve Otto, 50, of Berthoud, jumps into the 36-degree Boulder Reservoir during the annual Polar Plunge on Jan. 1, 2012. The event, sponsored by the Young Professionals Alzheimer's Association of Colorado, celebrates its 30th anniversary this Jan. 1. ( LEWIS GEYER )