Lion's Den Leiden

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Lion's Den Leiden

Location to train : Grappling, Catch Wrestling, and Nogi Brazilian Jiu jitsu
Run by Guy van Polanen
www.lionsdenleiden.nl

Location to train : Grappling, Catch Wrestling, and Nogi Brazilian Jiu jitsu
Run by Guy van Polanen
www.lionsdenleiden.nl

Monday 20:00-21:30 grappling/catch wrestling/Nogi Brazilian Jiu Jitsu

Wednesday 20:00-21:30 grappling/catch wrestling/Nogi Brazilian Jiu Jitsu

Saturday 16:00-17:30 grappling/catch wrestling/Nogi Brazilian Jiu Jitsu

[email protected]
www.lionsdenleiden.nl

20/09/2026

🥉 BRONZE FOR COLIN AT VERSUS GRAPPLING!

What a performance from Colin today at the VERSUS Grappling tournament in Eindhoven!

Colin has only been part of Lion’s Den Leiden for a few months and, as a surprise to all of us, secretly signed himself up for the tournament to test himself in competition. 😄

He competed in the -100 kg Novice division (under 9 months experience) — and came home with a bronze medal! 🥉

Colin fought incredibly well and showed great composure, including a beautiful win by Ezekiel choke from mount.

We’re extremely proud of you, Colin! 🦁

And a big shout-out to Mo and Khalil for coaching, supporting and helping him throughout the tournament. That’s exactly what we want to see at Lion’s Den Leiden: teammates showing up for each other.

Great performance. Great team spirit. Great team effort.

Proud of the whole team! 🦁🔥

20/09/2026

He came. He saw. He conquered. 🥇

Today Khalil stepped onto the mats at the VERSUS Grappling Tournament in Eindhoven and delivered an outstanding performance.

No big talk. No ego. Just hard work, humility, and great grappling.

4 matches.
4 submission victories.
🥇 GOLD in the +100 kg Beginners Division (under 2 years of experience).

Couldn’t be prouder of the way Khalil represented Lion’s Den Leiden today. Calm, respectful and focused from start to finish.

Hard work speaks for itself. 🦁

Congratulations, Khalil! Well deserved.

14/09/2026

🦁 BRING YOUR FRIEND. BUILD THE DEN.

Training is better when you bring your people with you. 💪

Bring a friend to Lion’s Den Leiden and when they become an active paying member, you receive 10% discount on your monthly membership for every friend you bring.

1 friend = 10%
2 friends = 20%
3 friends = 30%
4 friends = 40%
5 friends = 50%
🔥 And it keeps going — up to 100% discount!

Your discount stays active for as long as your referred friend remains an active paying member.

Train hard. Bring a friend. Build the Den. 🦁

03/09/2026

🦁 CLEAN MATS. SAFE TRAINING. STRONG TEAM.

Good hygiene is part of being a good teammate.

In Jiu Jitsu we train in close contact, so keeping ourselves and our training environment clean is everyone’s responsibility.

🚿 Shower before and after training
✂️ Keep fingernails and toenails short
🩴 Keep your feet clean & wear flip-flops off the mat
🩹 Cover all cuts and scrapes
🚫 Don’t train with rashes or possible skin infections
🥋 Always wear a clean rashguard

Respect yourself. Respect your teammates. Respect the mats.

Good hygiene keeps everyone healthy, safe and able to keep training. 💪🦁

📍 Lion’s Den Leiden
🌐 lionsdenleiden.nl
📲 Lion's Den Leiden

03/09/2026

🦁 OUR CORE VALUES

At Lion’s Den Leiden, Jiu Jitsu is about more than techniques, submissions and winning rounds.

Be a good teammate.
Help each other improve. Respect everyone on the mats.

Stay committed.
Show up. Be consistent. Keep going, especially when it gets difficult.

Do the work.
There are no shortcuts. Progress comes from putting in the rounds, learning from your mistakes and coming back better.

These are the standards we try to live by — on and off the mats.

Train together. Improve together. Grow together. 🦁

📍 Voorschoten
🌐 lionsdenleiden.nl
📲 Lion's Den Leiden

Everyone is welcome.

03/09/2026

🥋 READY TO START YOUR JIU JITSU JOURNEY?

Whether you’re completely new to Jiu Jitsu or already have experience, you’re welcome to train with us at Lion’s Den Leiden.

Come improve your technique, fitness and confidence in a positive team environment. Train hard, learn together and become better every session. 🦁

Weekly schedule:
Monday | 20:00–21:30
Wednesday | 20:00–21:30
Saturday | 15:00–16:30

📍 Raadhuislaan 43, 2251 GA Voorschoten
🌐 www.lionsdenleiden.nl
📲 Lion's Den Leiden

Interested in joining? Send us a DM and come try a class!

29/08/2026

🥋 LION’S DEN LEIDEN — EXAM DAY

What a day on the mats!

After more than two hours of hard sparring, everyone successfully passed their exam. A huge congratulations to all our fighters who earned their new belts and stripes today!

Every promotion represents hours on the mats, consistency, discipline and hard work. Nothing was given — everything was earned.

What makes me especially proud is seeing the team grow together. Training hard, pushing each other, helping each other improve and celebrating each other’s success.

And now… the work continues.

At Lion’s Den Leiden, we train No-Gi Jiu-Jitsu & Submission Grappling in a hardworking and welcoming environment. Whether you have years of experience or have never grappled before, beginners are always welcome.

Want to challenge yourself and become part of our team?

🥋 No-Gi Jiu-Jitsu & Submission Grappling
👊 All levels welcome
📩 Send us a DM for a trial class
🌐 www.lionsdenleiden.nl

Congratulations team — well deserved! 🦁

20/08/2026

WHAT IF THE SPORT YOU’VE BEEN LOOKING FOR IS ONE YOU HAVEN’T TRIED YET? 🦁

Welcome to Lion’s Den Leiden — a team where people come to learn, challenge themselves and grow.

You don’t need experience.
You don’t need to be young.
You don’t need to be a certain weight or already be in great shape.

You just need the right attitude.

Be a good teammate.
Be willing to work hard.
Stay committed.
And come with the desire to improve.

Some of us compete. Others train purely as a hobby. Both belong on the same mats.

Because for us, grappling isn’t only about winning matches. It’s about becoming stronger, more skilled, more disciplined and more confident — as an athlete and as a person.

📸 This is Emil, one of our competition athletes, in action at Grappling Industries.

Curious what grappling could do for you?

Come meet the team and experience it for yourself.

🌐 www.lionsdenleiden.nl
📩 Send us a DM

Photo credit: Kim

LION’S DEN LEIDEN 🦁
Different goals. One team.

11/08/2026

Ever wondered what grappling is all about? 🦁

You don’t need experience.
You don’t need to be in perfect shape.
You just need to take that first step.

Learn. Get stronger. Build confidence. Have fun.
Everyone starts somewhere.

Come discover No-Gi Jiu-Jitsu at Lion’s Den Leiden.

🌐 www.lionsdenleiden.nl
📩 Or simply send us a DM

📸 Kim
Ruud representing Lion’s Den Leiden at Grappling Industries Amsterdam.

05/07/2026

🥉 HISTORY MADE AT THE DUTCH OPEN 🥉

Yesterday, Dean Hasoun made history.

Dean became the first athlete in Lion’s Den Leiden history to win a medal at the Dutch Open, one of the toughest Brazilian Jiu-Jitsu tournaments in the Netherlands.

Competing in the Adult Male (16+ years) White Belt -67.5 kg division, Dean fought through seven matches against an exceptionally high level of competition to earn this hard-fought bronze medal.

What makes this achievement even more remarkable is that Dean did it without a coach in his corner. He travelled to the tournament alone, trusted his preparation, and kept fighting until the very end.

As coaches, we are incredibly proud of Dean’s performance. But we’re even prouder of the person he is.

Dean is someone who never looks for excuses. He shows up to every training session, works tirelessly to improve, studies the sport, supports his teammates, and is always ready to help others. Those qualities define a true martial artist far more than any medal ever could.

Dean has also overcome many challenges in his personal life. Watching him grow—not only as a grappler, but as a person—has been inspiring.

This bronze medal represents much more than a place on the podium. It is the result of months of discipline, resilience, perseverance, and character.

Congratulations, Dean. You have written a piece of Lion’s Den Leiden history, and we have no doubt this is only the beginning.

We are incredibly proud of you. 🦁🥉

Adres

Raadhuislaan 43
Voorschoten
2251GA

Telefoon

+31615234978

Website

http://www.lionsdenleiden.nl/

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