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As you jump, bring your knees up as high as possible to your chest as shown in Photos #7, 8 & 9. You should go through this series three times.<br>If an athlete cannot bring his knees easily to his/her chest, they are finished with this segment of Box Jumping. Those that can, go to The Rapid Fire To Big Box drill. To do this, bring in the 32-inch box. Go through the Rapid Fire sequence and at the end, jump up on top of the big box as in Photo #10. From this point, if your ability permits, you can keep increasing the height of the box. Photo #11 shows the addition of our booster box which can take it up to a 40-inch height. Photo #12 shows P.J. making this height. <br>Even taller boxes can be used as in Photo #13. The next photo (#14) is of P.J. again. He can easily jump to a 50-inch height. Photos #15, 16 and 17 show P.J. jumping over the 32-inch box with one leg. Obviously, this is extremely advanced and is not something even a gifted athlete should try right away. <br>We believe all athletes, regardless of athletic ability, should do our Box Jumping routine. We even show you how to spot, not only for safety, but for a unique way to help all athletes be successful. Jeff Scurran, one of our BFS Clinicians, coached literally thousands of athletes through the years at Sabino High School in Tucson. On the video, Coach Scurran shows this unique spotting technique and says,  I never had an athlete who stuck with our program not be able to jump to the 32-inch box. This includes every lineman and every athlete involved in girls sports. Get this video. The benefits will be enormous.hat the exercise was an integral part of the training of Russian weightlifters. He saw that weightlifters would often perform some variation of the exercise twice in a workout, once before the workout with light weights as a warm-up, and again at the end of the workout with heavy weights as a strengthening exercise. This sensible practice was also followed in the U.S. In fact, five-time national weightlifting champion Ken Clark, whose picture appears in the BFS Total Program Book, began every workout with several sets of back extension exercises. In 1983, at a body weight of 220 pounds, Clark clean and jerked 470 pounds, an American record that has yet to be equaled.<br>While in Russia, Charniga noticed that not much had changed in regard to how the exercise was performed since that first Strength and Health article, with the exception that some gyms had positioned straps to secure the feet.  They simply didn t have access to materials, or the budget, to have someone make a sophisticated glute-ham developer for them. When Charniga returned to the U.S. and told others of his findings and his success with the exercise himself, resourceful equipment manufacturers began experimenting with designs for a glute-ham developer. The BFS glute-ham developer, with its adjustable foot plate and rounded pelvic support represents the latest in the evolution of this apparatus.<br>The glute-ham exercise is a must for every serious strength training program. When I was hired as a strength coach for the U.S. Air Force Academy in 1987, my first day on the job I ordered two BFS glute-ham developers. Because we had to work with nearly 1,000 athletes, the Academy needed to purchase equipment that was durable, functional and versatile. Th