"Chicago Bears linebacker Brian Urlacher loves the game so much that he gets pain-killing injections and would not admit to feeling like he had a concussion in order to stay on the field.

Urlacher appeared on "Real Sports" on HBO and said that he has been shot up with Toradol, an anti-inflammatory that can decrease pain by reducing inflammation.

"It's normal," Urlacher told "Real Sports". "You drop your pants, you get the alcohol, they give you a shot, put the Band-Aid on and you go out and play."

Kremer points out in the segment that regularly using the drug can lead to kidney failure and gastrointestinal bleeding. Urlacher professed to not know the side effects but says it didn't really matter."