A look at the culture of playing through your injuries in the NFL:

“But when you’re always hurting, how do you know when you’re hurt?

“You don’t. Not always, anyway. ‘A lot of times you don’t know exactly when the injury happens, because you’re taking drugs like Toradol or another kind of anti-inflam, so you’re feeling good,’ says Tennessee Titans quarterback Matt Hasselbeck. ‘Or maybe you’re dealing with a previous injury, like an ankle, and you’re taking Toradol, so you’re feeling a little bit better, but now all of a sudden everything is feeling a little bit better. Plus, you have the rush of adrenaline — so the injury might hurt a little, but you don’t really realize it. You might not feel it till the next day, or you may feel it that night. Because your mind-set is to play through everything you can, unless you cannot. And usually, it’s been my experience that when you come off the field after an injury, the trainer or the team doctor is meeting you. They’re like, ‘You haven’t moved your arm in thirty seconds. What happened?’ And you’re like, “I’m fine, I’m fine, I’m fine — leave me alone.”‘”