TEK Sled - Defensive Line Drills - Part 7 

Here's Ryan Culloty, Defensive Line Coach at Pontiac Notre Dame Prep, doing part 7 of this defensive line hand drill with his team.
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Football has evolved as athletes get bigger, stronger, and faster. As football offense is now more complex, the defense must train to physically play the offender, as well as break-through the blocker to take the seam, hence putting the defender in a position to attack or disrupt the ball carrier. The TEK Sled moves like a blocker, allowing the defender to work on shocking the offensive player, creating leverage and violently separating or attacking the offender.