Wheelbarrow

Place 275 pounds of free weights in a standard wheelbarrow. Grip wheelbarrow handles and sprint 100 yards up a 10-degree incline. Turn and run down, still holding wheelbarrow in front of you. One-minute rest. Three round trips.

Hackleman: "It takes endurance and leg strength to push that weight up the hill, but it's a killer for your grip and shoulders going down. Down is just as important because in ultimate fighting you constantly use those muscles to pull your opponent to the mat or off of you."