Because the past six months, I’ve witnessed the core of my marriage dissolving, and now I don’t know how to build it back. Because at some point, critical damage is done, and there’s no returning to what it was before. In the human body, it’s called “irreversible atrophy.” As a physical therapist, I’m no stranger to it, even though I fight it as much as I can, working my patients until they’re sweating and crying and cussing me out.