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They call the NFL a "collision sport," and after you watch the following 30 hits, you'll see exactly why.

Given the amount of vicious hits that occur game after game, season after season, it's amazing that any of these guys even remember their names or how to tie their shoes.

They sacrifice their bodies for the love of the sport, and we love them for it. They make Sunday the best day of the week, and when we hear the crack of the helmets, it's man at his most primal.

You get the point, so let's just watch guys get rocked, yeah?

Here we go.