Word: heartedly
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...Afghanistan-like war zone to unveil a new weapon, his jeep is blown up, his team of escorts killed, and as he passes out he sees that the missile that did the damage came from Stark Industries. Severely wounded - and kept alive with a car battery wired to his heart - he comes to in the cave of Taliban-like insurgents, whose head-shaved leader (Faran Tahir) would very much appreciate it if Tony could confect a home-made bomb for him. Instead, with the help of a fellow prisoner (Shaun Toub), Tony constructs a heavily armed metal suit, blasts...
...casing. And he won't make Dr. Frankenstein's mistake of using shoddy materials. This will be no stitched-together, run-amok creature. It can't be Tony's ruin; it must literally save his lifesaver. When he's done, out steps Iron Man: a monster with heart...
...after just a couple of minutes. When holding your breath underwater, however, you have a bit of mammalian evolution on your side. When humans are submerged in cold water, our bodies instinctively prepare to conserve oxygen, much in the way that dolphins' and whales' bodies do when they dive. "Heart rate drops, blood pressure goes up and circulation gets redistributed," Potkin says. The body's focus becomes getting the oxygenated blood primarily to the vital organs - the brain and the heart - and not the extremities or abdomen...
...With or without pure oxygen, holding your breath is a difficult and dangerous pastime even for elite athletes. When not done carefully, it can lead to drowning, or to potential tissue damage in the heart, brains or lungs. Preliminary results from Potkin's research into apnea's long-term effects show some abnormal brain scans among young, extreme free divers. There's still much to learn about the phenomenon; as a medical student, Potkin recalls, he was told that no one could hold his breath for more than five minutes without suffering brain damage. Now, he wants...
...That was really hard. It was overwhelmingly intense. I felt my heart suffering, my lungs suffering. The urge to breathe was overwhelming. I'm lucky I did all the training. I trained for five months, pretty hard-core. Every morning I would do CO2 exercises. I'd breathe for 48 minutes, then hold my breath for 12 minutes each hour. I'd do that about three mornings a week. I was able to beat the time I got on Oprah. But that was in a controlled environment, [with] doctors, in a swimming pool, with my body laying horizontal as opposed...