Upper Body Exercise 01
Seiken Oi Tsuki
Lunge Punch
Stance
Crescent step into heel-toe position.
Step forward from the ready position with the right foot. The right knee passes close to the left knee as the foot travels in an arc, returning to shoulder width and approximately one foot-length ahead. The lead heel aligns with the toes of the rear foot. Keep the knees bent and the posture upright.
Upper body
Strike the center line with the lead hand.
Deliver a right-hand lunge punch toward the center line. Strike with the first two knuckles, keeping the wrist aligned with the forearm. The elbow travels close to the ribs. Extend without locking the arm, then retract quickly, finishing with the forearm parallel to the floor and the elbow held away from the ribs.
Technique sequence
Ready. Step. Punch. Recover.
The exercise is practiced on both sides. These four source photographs show the basic progression illustrated in TIS.




Training purpose
The source describes Exercise 1 as a way to coordinate and align the body for an effective vertical punch delivered over the lead foot. The emphasis here is on the mechanics of the exercise rather than reproducing the source's longer Waza discussion.
