"Dynamic-Tension" is a registered trademark of Charles Atlas, Ltd. Mr. Atlas watched a tiger stretching in the zoo and asked himself, "How does Mr. Tiger keep in physical condition? Did you ever see a tiger with a barbell?" He concluded that lions and tigers became strong by pitting muscle against muscle.
FYI, This principle was exemplified in the business concept of the balanced scorecard, pitting revenue against profit ratio in calculating sales commissions.
Mr. Oliver says that Grand Master Shimabuku wanted students to use dynamic tension to both develop strength and to focus on important movements. It is first introduced with Seiuchin Kate. This Gojo-Ryu kata uses dynamic tension to build strength and stamina through its ibuki breathing and strong muscular tension.
Example for legs. Do deep knee bends and flex hard your quadriceps, hamstrings, glutes, hips and even calves. Keep the tension hard and steady, it will take some practice to do it all together, but the incredible pump and muscle growth you will get from it will be well worth your while.
