Movement is big medicine; it’s the signal to every cell in our bodies that no matter what kind of damage we’ve suffered, we’re ready to rebuild and move away from death and back toward life. Rest too long after an injury and your system powers down, preparing you for a peaceful exit. Fight your way back to your feet, however, and you trigger that magical ON switch that speeds healing hormones to everything you need to get stronger: your bones, brain, organs, ligaments, immune system, even the digestive bacteria in your belly, all get a molecular upgrade from exercise.
