I don't know why they bother with that play where the QB hands the ball to the guy behind him, and that guy charges into the big pile of bodies and.. that's it. No gain. Does anything good ever come of that? I presume the point is that he finds a gap in there to run through, but I don't see that happening often,
Depending on the game situation, it can also eat up clock and help to protect the lead by being a less risky play.