LAGUNA HILLS, Calif. — Strapping into a hyperbaric oxygen chamber is a unique experience for the average person.Approaching a windowed, enclosed tube with an oxygen mask dangling and a timer set to one hour on top of the contraption may feel daunting, but hey, there’s a friendly pair of hands to guide you and a TV on the other side of the glass to soothe your attention span.Laying down on the bed, in some ways, you feel like you’re heading into a more comfortable MRI machine. With a more overactive imagination, perhaps you feel like an astronaut.At any rate, it is not a normal part of someone’s day — unless you’re a world-class athlete. Then, it’s what is rapidly becoming a typical part of recovery, using cutting edge technology and every available resource to aid performance. It’s especially popular among ultimate sporting age-defiers like Tom Brady, LeBron James and Cristiano Ronaldo.At this World Cup, the U.S. men’s national team is utilizing hyperbaric oxygen therapy as part of its recovery, with the team’s base camp in Southern California featuring the same kind of equipment.“If a player has got any injuries, this is going to shorten their recovery time,” Carol Manning, founder and CEO of Hyperbaric Lab, told The Athletic. “At minimum, 30-35%, they’ll heal faster. If it’s just to rebuild, restore and recover … they’re going to see a 50% increase in stamina and reaction time. I would say you really need to do it three times a week if you’re a pro athlete.”Lasers and hyperbaric chambers: Inside USMNT’s high-tech recovery zoneTom BogertManning, whose facility is a short drive from the team’s group stage base, says she hosted U.S. midfielder Sebastian Berhalter and another teammate early in camp. She regularly sees high level youth and college athletes, as well as a professional MMA fighter, among other clients.