I do tire flips, tire jumps jump into the center of the tire and then jump out without stopping in between each jump I usually string together 2 or 3 tires so I can jump 4 to 6 times without turning around, sledge hammer, sideways tire jumps same thing as going straight but jump to the right into the center then to the right out of the tire then back in to the left and out to the left, front squat the tire instead of flipping the tire completely over I will keep my hands underneath it and front squat it a bunch of times. I do all of this after I have done a bunch of different sprints and pull ups, push ups, sit ups etc. So it kicks my ass.