Because every time you feel a normal ache or pain in the area where you were hurt, your brain immediately goes "OH FUCK DID I DO SOMETHING AGAIN TO THIS, OH NO OH NO, I JUST STARTED FEELING BETTER, FUCK THIS"

So whether his back is hurting real bad or if it's hurting in a relatively normal way for athletes, I've no doubt that it's hard to not be ginger with it. Especially when it's a back, man. Backs are fucking frightening.