Tradition 15 May 2026 3 min read

What is Junbi Undo?

By Sensei Sam Siegers · 4th Dan Seiwakai Goju Ryu · Founder, Yushukan Karate, Tweed Heads South

Junbi Undo is the traditional Goju Ryu warm-up and mobility sequence. For adult bodies it does most of the work that actually matters on the mat.

Junbi Undo warm-up sequence at the Yushukan Karate Honbu Dojo, Tweed Heads South

At Yushukan Karate in Tweed Heads South, Junbi Undo is one of the most important parts of the training week. The name translates as preparation exercises, and that is exactly what it does: prepares the joints, posture, breath and nervous system for everything that follows. It is the traditional Goju Ryu mobility sequence, used in the dojo before training, and it is a genuine part of the method, not a token stretch.

What is in the sequence

Junbi Undo covers the full body, working from the ground up. Ankles, knees, hips, lower back, shoulders, neck and wrists each get their preparation. Some movements are dynamic mobility, others are isometric holds, others are joint-by-joint articulation. The sequence is structured to wake up the system as a whole, not just the major muscles.

There are variations across Goju Ryu schools and across teachers within Seiwakai. The core sequences are consistent and recognisable to any Goju Ryu practitioner who walks in. Yushukan teaches the Seiwakai and JKF Gojukai version, which is the standard for the lineage we train to.

Why it matters more than most people realise

Most fitness programs skip the warm-up to save time, and that is exactly where adults get injured. Junbi Undo treats the warm-up as part of the training. At Yushukan it runs for a full fifteen minutes in the adult program. It is not optional and it is never rushed.

Skipping preparation increases the chance that training feels rougher than it needs to, especially for adult bodies. Spend the fifteen minutes and the next forty are productive. We have seen this play out enough times to make it a rule, not a recommendation.

What changes when you do Junbi Undo consistently

For adults walking in stiff or sore, two or three weeks of consistent Junbi Undo usually changes how the body feels off the mat. Lower back releases. Hips open. Shoulders move better. Some adults report that consistent preparation helps them feel looser and more comfortable, but old injuries should always be discussed with your instructor before training. The sequences are unglamorous and they work.

It is also why people in their fifties, sixties and beyond can train consistently here. The sequence does the underlying maintenance the rest of training would otherwise have to do under load.

How it is taught at Yushukan

Junbi Undo opens every class. New students learn the sequence in their first week and own it from there. We watch and correct, but the responsibility moves to the student quickly, because the value of the sequence is in doing it consistently rather than perfectly the first time.

For Karate Ready Adult beginners, Junbi Undo is taught session by session through week 1, with the full sequence in place by week 2. Children's classes use a shorter age-appropriate version. The principle is the same: you do not train without preparing first.

Related practices

Junbi Undo pairs naturally with two other traditional Goju Ryu practices. Hojo Undo is supplementary conditioning, often with traditional weighted tools, used to build the structure that strikes and stances depend on. Sanchin is the posture, breath and structural test that takes the foundation built in Junbi Undo and integrates it into a kata you can run as part of your day. Read what is Sanchin for the longer answer on that.

Try it for yourself

The fastest way to understand Junbi Undo is to do it under instruction. Karate Ready Adult begins with mobility, not intensity, and Junbi Undo is the opening fifteen minutes of every session. Book Karate Ready for the next intake.

Written by Sensei Sam Siegers, 4th Dan Seiwakai Goju Ryu and 3rd Dan All Japan Karate Federation Gojukai. Sam founded Yushukan Karate in 2020 at the Tweed Heads South Honbu Dojo (Unit 3/58 Machinery Drive, Tweed Heads South NSW 2486). He continues to travel to Japan and Okinawa to train under Seiichi Fujiwara Hanshi and other senior teachers.

Yushukan Karate teaches traditional Goju Ryu to kids 7+, teens, and adults. Beginners start with Karate Ready, a structured 3-week pathway.

Ready to try?

Interested in trying Goju Ryu?

Karate Ready is a structured 3-week starter for kids 7+, teens, and adults. No experience needed, no pressure.

Sign Up