Body Charge Lab: a 3D lab for Taekwondo, yoga and more, built in days, not years
For years I’ve tried to explain where the power in a technique comes from. It starts at the floor, climbs through the legs, turns in the hips and comes out through the striking surface. Students nod. Then they punch with their shoulders anyway.
So I built a way to show them.
Body Charge Lab is a 3D figure that runs every form in our Chinmukwan syllabus, a growing catalog of yoga, and now cheerleading tumbling and Shortline, and lets you watch the charge move: up from the ground, through the center of mass, out to the fist or foot, with a line that marks where the energy lands. The head even turns to look at each strike, the way yours should.
Built in days, not years
Here’s the part that still gets me. A few years ago, a project like this would have needed a 3D developer, an animator, someone who understands biomechanics, a tester and a budget no one approves for a side project. Months of work, easily more. I’d never have built it.
I built it in days, working with Claude, Anthropic’s AI. I brought the martial arts: the 24 forms, the stances, how a front kick should chamber and rechamber, what a 6th dan belt looks like. The AI brought the 3D math, the physics, the code, and a set of automated tests that check every change before it goes out. When I said “that kick looks wrong,” it figured out why (the leg was shrinking mid-kick) and fixed it in minutes.
That’s the real story here. Not that AI can write code, but that one person who knows a subject cold can now build something that used to take a team.
Then it learned yoga
A punch is one movement. An arm balance is a whole journey: you squat, plant your hands, set your knees on your arms, shift forward, and only then do your feet float. Getting in and getting out is half the pose, so that’s how the lab teaches it. Every yoga pose plays its way in, holds, and plays its way back out.
That took real engineering. The figure grew a spine that can round and arch and shoulder blades that slide, so a bind can twist the chest open. The palms became real contact points, so you can watch the weight leave the feet and land in the hands. And every pose is checked automatically: the right body parts carry the load, the balance stays over the base, the hands don’t skate around, and no arm passes through a leg.
The catalog is up to 55 poses. Crow, Crane, Firefly, Peacock, Eagle, Dancer, Half Moon, Bird of Paradise, the Marichyasana binds, the inversions (Headstand, Handstand, Forearm Stand, Shoulder Stand, Plow and Wheel) and, newest of all, Corpse. Even lying still teaches something: the floor takes the whole back of the body and the muscle effort drops to almost nothing. Each batch goes from idea to tested in one working session.
What’s new since launch
The first version went live on October 17. Five days and a couple dozen releases later, it’s a different lab. The highlights:
- More sports. Cheerleading tumbling (Standing Tuck, Round Off, Back Handspring, Back Full, Back Layout and passes that chain them, with the camera following you across the floor) and Shortline, an unarmed style Claude designed for efficiency, with twenty techniques and a first form. The catalog now opens on a tile for each sport, and the figure dresses for it: a white uniform and black belt for Taekwondo, yoga wear, a cheer uniform with sneakers.
- A female figure. An athletic build much like the male figure’s, with a ponytail that hangs with gravity, even in a handstand. She performs every move exactly the same way. Your first visit asks which figure you want and which sport you train, and opens on a starter move.
- Joints that stop where a body stops. Knees and elbows bend one way only and close until calf meets thigh or forearm meets biceps. Ankles and wrists have limits too. Bones keep their length when you drag a limb, a planted foot pivots on its ball, and pulling the head straight up makes the figure stand tall. Every move is now built inside those limits, not just corrected on screen.
- A catalog anyone can add to. About 400 techniques, forms, poses and skills across 20 styles are listed as planned, from WT poomsae and Shotokan kata to Tai Chi, Judo, Muay Thai and Capoeira. Every one has a Build button and a step-by-step guide. Submit a move and, once I approve it, it goes live with your name on it.
- Sponsor a mat. Each sport’s mat has three sponsor spots. A dojo, studio or gym can put its logo under every move in that sport, drawn as line art in the mat’s teal. I approve each one.
- A light suit. A black bodysuit with electric blue light lines that glow on their own. Because why not.
Every change is listed in the release notes.
What’s in it
- All 24 Chang Hon forms (hyung), Chon-Ji through Tong-Il, plus Four Direction, in our federation’s order, each tagged with its belt level.
- 55 yoga poses with real entrances and exits: arm balances, standing balances, binds, inversions and Corpse, each one showing where the weight goes on the way in, in the hold and on the way out.
- Cheerleading and Shortline, with roughly 400 more moves across 20 styles on the planned list.
- Kicks thrown the way we throw them. Chamber, snap, rechamber, set down. How a technique is thrown is as much a part of the style as where it lands.
- Slow motion. Drop to a tenth of normal speed, or step one movement at a time.
- Grab the figure and pose it. Hands, feet, toes, knees, elbows, shoulders, chest, hips, head. Joints stop where a real body stops, and it fights to keep its balance.
- Female and male figures, with your own height and weight.
- An impact estimate in joules, with a lightning bolt that’s more fun than it strictly needs to be.
- Build your own sequences with keyframes and a knife prop, and submit them to the catalog. That’s how we’re putting together Dan Do, our knife sequence.
- It works on your phone. Hide the controls and it’s just you and the figure.
Why an IT company built a Taekwondo lab
Open Tier Systems is an IT company. Our day job is keeping businesses running, secure and moving forward. This project uses the same approach we bring to our clients: put someone who knows the problem inside and out together with AI that can build, and ship something real, fast.
It’s built the way we’d build anything for a client, too. Every change is tested automatically, stamped with a version number and published to the web without anyone touching a server. That’s how it went from version 1.0 to 1.25 in five days without breaking.
If there’s a tool or process in your business you’ve written off as “too expensive to build,” it might not be anymore. Start with an AI business assessment and let’s talk about it.
The honest part
The forms follow the published ITF texts and the yoga follows standard alignment, but arm and leg shapes, stance depths and timing are still approximations, and a trained eye will spot things. Use it to see how energy and balance move through a technique, not as the reference for how one should look. If you see something off, use Suggest a fix in the lab or tell me. I’ll fix it, with a little help.
Want more room? Open the lab full screen.
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