What exactly is randori?
Randori (literally "free practice") is a training fight where both judokas practice freely, without the constraints of competition. No score, no referee: just two partners working together.
It's the most important exercise in judo after real competition.
How it differs from shiai
| Aspect | Randori | Shiai (competition) |
|---|---|---|
| Goal | Learn and experiment | Win |
| Pressure | Low | High |
| Risk-taking | Encouraged | Calculated |
| Mistakes | Welcome | Costly |
| Intensity | Variable | Maximum |
The benefits of randori
1. Test new techniques
In competition, you rely on your most trusted techniques. In randori, you can try that new Seoi-Nage variation you've been drilling in uchi-komi. If it doesn't work, no problem: that's the point.
2. Develop feel
Judo isn't learned solely through mechanical repetition. Randori develops your ability to:
- Feel your opponent's imbalance
- React to opportunities in real time
- Chain attacks naturally
3. Build conditioning
A solid 5-minute randori is an intense workout. Stringing together multiple rounds with different partners is one of the best ways to build judo-specific endurance.
4. Manage stress
The more randori you do, the more comfortable you become in combat situations. This familiarity reduces stress in competition.
Randori is where judo comes alive. It's where you discover what you can actually do.
How to get the most from randori
Do:
- Vary your partners (heavier, lighter, beginners, advanced)
- Set one goal per session (e.g., only work Ne-waza)
- Stay relaxed and fluid
Don't:
- Block constantly without attacking
- Go at 100% intensity every round
- Refuse to work with less experienced partners
Track your randori
With Judata, you can also log your randori sessions. Which techniques did you try? What worked? It's an excellent complement to logging your competition fights.
Download Judata to track your daily training.