The Lowdown

Our search for the baddest, most legit combat sports gyms in Poznań doesn’t stop. We’ve already hit some heavy-hitting boxing and kickboxing spots, but this time, we went deeper. We were on a mission — find the jiujitsu gym that doesn’t just talk the talk, but chokes it out cold.

We wanted pedigree. No Instagram coaches. No trophy dust collectors. We wanted sweat, blood, and technique forged in real mats. And damn — we found it.

Welcome to 21 Jiujitsu, hidden like a secret weapon in the old town, right off Grochowe Łąki 5. The place is tucked inside a loft-style building, down a patio alley that already feels like a scene from a fight movie. No neon lights, no frills — just the raw stank of hard work and discipline.

The Boss

The man behind it all? Sebastian — and let’s just say, the guy is built different.

Here’s a taste of his resume:

4th-degree black belt in Brazilian Jiu-Jitsu (one of Poland’s first!)

3 DAN Olympic Taekwondo

2 DAN Oyama Karate

3 DAN Luta Livre

Crossfit L2 + certified coach in self-defense, yoga for BJJ, kettlebells, weightlifting

Trains everyone from kids to uniformed forces (yes, CBS, BOR, AT – that level)

Co-author of Poland’s first BJJ book

Sharpens his blade yearly in Brazil, Japan, Thailand, USA

You still reading? Good — ‘cause he also trains champions. European and World medalists. And if you show up, he’s ready to train you.

What’s on the Mat

Whether you’re just starting or already know your kimura from your armbar, 21 Jiujitsu has you covered. You can join:

Brazilian Jiu-Jitsu (Gi and No-Gi)

Submission Wrestling

Muay Thai & Boxing

Wrestling

Cross-training / Functional CrossFit

Yoga for BJJ

Jiu-Jitsu for Kids

Personal Training (1-on-1 grind with real results)

No wasted time. No excuses.

Unlike the many glossy gyms filled with mirrors and #fitspo posters, 21 Jiujitsu is built for fighters. It’s a space that strips away ego and replaces it with grind. Group training pushes you with real rivals. Individual classes tailor the pain to your gain. No wasted time. No excuses.

And for those looking to level up their overall physical game, the CrossFit program is solid. You’ll mix gymnastics, weightlifting, and endurance work under proper trainers — not randoms with whistles. Start with the INTRO course to learn basic form, and then hit the WOD classes like a savage.