What is a tatami?

What is What is a tatami??

Tatami (畳) are the mats judo is practised on — originally rice straw, nowadays compressed foam with a non-slip surface.

How does What is a tatami? work?

A standard judo mat measures one by two metres and is about four centimetres thick. It is firm enough to stand and move on, yet springy enough to absorb throws — exactly why ukemi is taught on tatami rather than gymnastics mats. In competition a red contrast area marks the edge of the contest zone.

tatami in Amsterdam dojos

In Amsterdam dojos tatami shows up as mat safety and upkeep. Coaches explain it with seams, hygiene, edge zones, and mainly correct training on shifted mats. This page translates official frames (JBN/IJF/Kodokan where relevant) into class practice without lifting federation prose.

Meaning of tatami

tatami centres on mat safety and upkeep. Concretely on the mat: seams, hygiene, edge zones. The idea is not separate from ukemi, gripping and respect — knowing only the definition misses how coaches place it in the syllabus. Historically and institutionally we point to Kodokan and/or IJF frames; for Dutch exams JBN leads. We summarise in our own words. After class write one sentence: which cue did you hear for tatami? That sentence is homework — not a random YouTube compilation.

tatami in the weekly class

A typical Amsterdam class builds tatami in layers: short briefing, slow partner drill, pace, then apply in randori or an exam-like demo. Centrum groups have less running space; Zuidoost more often has longer lines — teaching adapts to the hall. For youth, repetition with game forms matters; for seniors, transfer into shiai or kata. Ask your sensei which block touches tatami that week. Parents: stay sideline, do not photograph randori without permission, and discuss tatami positively — mistakes belong to learning.

Competition, exams or etiquette around tatami

Depending on the concept, tatami touches shiai rules, kyu/dan requirements or etiquette. Check current IJF documents for scoring/penalties and JBN for graduations. Noord-Holland clubs translate that into pools and exam evenings on this site’s calendar. Separate ‘what is legal in contest’ from ‘what we practise in class’. Class intensity can be lower to learn tatami safely. When unsure, the newest official source plus your sensei wins — not a forum thread.

Safety and misconceptions about tatami

The biggest risk around tatami is training on shifted mats. Say that aloud before you train harder. Safety is part of the concept, not an appendix. Misconception: that tatami arrives ‘by itself’ after enough videos. Without feedback from a qualified coach you groove errors. Second misconception: that every child needs the same pace. Injury or fear? Cut volume and rebuild from ukemi and basic gripping before tatami returns at full speed.

Choosing and deepening tatami in Amsterdam

Use the dojo guide to find a club where tatami sits seriously in the programme. Pair with calendar clinics and related knowledge pages. Sources below support claims; we do not copy them verbatim. Trial checklist: how they explain tatami, how they correct, how safe the mat feels. Two trials beat ten landing pages. Keep returning to mat safety and upkeep — that is the through-line, not scoreboard stress.

Practice block 1: tatami

Week plan tatami (mat safety): class 1 isolates seams/hygiene; class 2 applies tatami in a theme drill; class 3 you observe others and write three cues. Sunday: five-sentence reflection — no video binge.

Practice block 2: tatami

Sensei talk on tatami: one question on mat safety and one on how seams/hygiene fits your age/belt. Write answers verbatim as a monthly checklist.

Practice block 3: tatami

Risk card for tatami: failure scenarios plus countermeasures, shared with a fixed partner. Update after near-misses. Safety is part of the concept.

Practice block 4: tatami

City guide: find an Amsterdam club/clinic that names tatami explicitly, bring a notebook, compare cues to your club. Facts rest on sources below; feel comes from the mat.

Practice block 5: tatami

Misconceptions: video alone does not make tatami; every child has a different pace; scoreboard stress is not pedagogy. Replace those myths with one measurable drill per week.

Practice block 6: tatami

Source hygiene for tatami: pick JBN/IJF/Kodokan by relevance, rewrite claims, on conflict the newest official page plus your sensei wins. No copy-paste of federation prose.

Practice block 7: tatami

Deepening case for tatami: describe a concrete Amsterdam class situation (youth or senior) where this concept went wrong, which cue the sensei gave, and how the next three sessions were adapted. Write at least eighty words in your log; without that case theory stays floating. Then attach a measurable drill (time, reps or checklist) that applies only to this concept.

Practice block 8: tatami

Check moment for tatami: have a partner quiz you with five open questions that cannot be answered yes/no. Note gaps. Schedule a remedial drill within seven days. This check does not replace a federation exam but prevents discovering shaky definitions only on exam night.

Practice block 9: tatami

Integration with neighbouring concepts around tatami: pick two knowledge pages that logically sit beside it and write a paragraph on how they reinforce each other on the mat. Read that paragraph aloud to your sensei for correction. That builds a network of ideas instead of isolated lemmas.

Practice block 10: tatami

Quality bar for tatami: state when you are satisfied (for example three clean reps, a faultless etiquette sequence, or a clear parent explanation). Share that bar with your coach. Without your own bar, progress stays vague and you only compare yourself to others.

Practice block 11: tatami

Closing depth tatami (Amsterdam): tie this concept to a fixed moment in the weekly class — briefing, drill or randori — and protect that moment from ad-hoc tournament prep. Write a twelve-sentence letter to your future self about what you want to improve in three months around this exact concept, including ukemi limits, grip agreements and how you ask for feedback. Reread the letter monthly. Add a five-item yes/no checklist that applies only to tatami, have your sensei initial it, and keep it with your judogi. That moves the lemma from "read on a website" to "drilled behaviour".

Practice block 12: tatami

Second closing block tatami: run a fifteen-minute mini-clinic with two partners where you teach what you understand so far. Teaching exposes gaps faster than following. Note three questions you could not answer and schedule within ten days a look at the official sources at the bottom of this page plus a club question. End with a safe cool-down matching the load of tatami — no bonus throws after fatigue.

Examples

• Contest area of eight by eight metres
• Red border mats as the outer zone
• Four centimetres of compressed foam

Our sources

• Kodokan Judo Institute
• IJF — Documents & rules
• Judo Bond Nederland