It's been over a year since Sara's neck surgery, and there's still a marble-sized knot sitting in her shoulder that won't quit. Massages haven't touched it. Time hasn't fixed it. So instead of waiting it out any longer, she's back in the chair for dry needling, the treatment that helped her most before surgery ever happened.

Dry needling sounds worse than it is: a needle taps into the muscle, and if that muscle is healthy, nothing happens at all. But if it's dysfunctional, it spasms, twitches, and resets itself, almost like it's shocking its own function back online. This round came with an upgrade too, a stem machine hooked directly into the needle, sending signal straight through the muscle.

The real point isn't the needle, it's the waiting. A knot that doesn't go away on its ...