ARCATA — Dillon Reagan can aptly be described as a “breath of fresh air.” Honest expression pours forth as he describes his odyssey, one that began on the football field before sending him through a long, dark tunnel from which he finally emerged, remarkably, back on the football field.   Unlike most of us, breathing isn’t something the Lumberjack offensive lineman takes for granted. Each time he explodes from scrimmage to open a hole for Humboldt State running backs or repels a pass rush, he’s overcoming his body’s limited ability to take in oxygen. For Reagan, that’s the easy part.   “The hardest part was when I went through a deep funk that lasted for months,” Reagan remembers. “The only person I would talk to was my girlfriend. I was waiting to die.”   That nightmare began, in 2009, soon after his freshman season playing for College of the Redwoods. He had found his way to Eureka from Issaquah, Wash., where several coaches of NCAA Division I programs had been tracking his prep career with keen interest.   “I had some looks from Division I programs, but I needed to improve my grades,” Reagan said. “There aren’t any football-playing JCs in Washington, so I chose College of the Redwoods because it’s one of the closest junior colleges to home.”   When he showed up at CR, Reagan initially felt uncomfortable. “I was this scared freshman,” he said. “Most of the players were about 24 years old, with beards. Their kids were sitting in the stands.”   His fears quickly dissipated as his talent emerged. Starting at center, he helped the Corsairs to a Bay Valley Conference championship. Following the season, Reagan was recognized as a second-team all-state selection.   “We kept hearing about this monster down at CR,” HSU strength and conditioning coach Drew Petersen remembers. “Everyone was talking about how he’d end up at Cal, or some other major DI program.”   Reagan was looking forward to an even better sophomore season at CR when he returned home to the town just east of Seattle that summer. Instead of following a weight-training and conditioning regimen, he decided to spend time on his uncle’s ranch in Cle Elum, Wash., lifting hay bales and helping out with a variety of chores. When the time to report for preseason training arrived, Reagan had added a few pounds to his frame. Coaches noticed an even more startling change – the previously powerful player could lift just over half the weight he had been able to heft the previous fall. But even as the coaches’ concern grew, Reagan’s confidence soared to new heights. He knew he was fine, and was ready to dominate opponents again.   “Teammates were saying, ‘what’s up with Dillon?”’ Reagan recalls.    “I met with the coaches, and they kept asking me if I was alright, or if I was using some kind of drugs. I thought they were all crazy. I had so much confidence it was unreal.”   The first game of the season arrived, a matchup with Laney College in Oakland. Reagan took the field, and played one of his best games ever – or so he thought.    His teammate