4:26 initial demo

5:53 importance of relaxed vs tense limb

6:24 principles applied in demo

7:57 posture demo, 8:24 weak, 8:34 strong

13:30 another more involved demo

18:06 preventing an opponent from (just) standing (up)

25:17, 26:07 controlling the hips

26:40 pressuring the hips, and bend their spine

30:32 keeping your own spine aligned