Luckily, when we get injured, we can have surgery and then simply recline on the couch and catch up on old episodes of “The Wire” in between visits to the physical therapist. And for us Primal Blueprinters, staying off our feet doesn’t necessarily mean we’ll gain weight. Our body composition is, after all, mostly determined by diet, so sticking to healthy fats and protein (with copious amounts of vegetables) while watching the carbs will keep us trim. Grok didn’t have it so easy. If Grok broke a leg or dislocated a shoulder, he wasn’t bouncing back after a quick visit to the local shaman. He became a detriment to his clan, unable to hunt, forage, or fight. Without the type of medical knowledge we’re lucky to have today, what would be a relatively simple injury for us could end up being a life ending calamity for Grok, especially if necessity demanded he fight through the pain and risk further damage.