Kneeling
Kneeling is mainly used as a transitional stance to enter or exit seiza, but has some fighting applications. Kneeling allows you to recover from a breakfall or drop kick without using your hands; having free hands means you can block while you recover, minimizing your vulnerability. Kneeling can also be used to provide extra downward momentum to drive some takedowns.
Your leading leg should have a 90° knee bend; your shin in perpendicular to the floor, and your thigh is parallel to floor. Your trailing leg rests on the ground, with your knee directly under your hip. Your shin rests on the ground. Your ankle is directly behind the knee with your toes and the ball of your foot touching the ground (“active toes”). Your instep does not contact the ground, because it is harder to stand or maneuver with “seal feet.” The leading heel and the trailing knee are a shoulder-width apart. Naturally, your shoulders remain above your hip, to ensure maximum stability.
Alternately, one can easily enter a correct kneeling position by entering a horse stance and twisting downward 90°, like a corkscrew.
[photo of kneeling from the front and side.]