Challenge, recovery, challenge, recovery—that is what toughens us. And that is why this trade has been good for Martin. He has benefited from just such a pattern of stress and recovery and has emerged a stronger—and indeed a richer—person. At this very moment, throughout his body, in a million different war zones, microscopic surgeons and nurses go to work repairing damage to tissues, tending to his every comfort—and brother, does it feel good.
