Welcome to Underground
Your escape, Your energy, Your reset.
Here, it’s all about movement that moves you — from the explosive power of kickboxing to the burning intensity of HIIT and the deep focus of Pilates. Whether you want to fight, sweat, or stretch — it all happens here at Underground.
This is your moment. Let’s move.
No egos. Just real workouts and real results.
All levels welcome. No pressure — just pure motivation.
Kickboxing
An energetic full-body workout combining punches, kicks, and powerful combos. You’ll build strength, endurance, coordination, and confidence — all in one explosive session.
HIIT training
A fast-paced workout with short bursts of intense effort followed by quick recovery periods. HIIT elevates your heart rate, burns calories, and builds strength in minimal time — perfect for maximum results.
Bag Training
A high-energy workout that blends boxing combinations with full-body movements. Bag Training sharpens your coordination, develops explosive power, and boosts your endurance — ideal for anyone who wants to train like a fighter and get an intense cardio workout.
Energy, Quality, and Connection
Located in the Heart of Amsterdam
Underground is a boutique gym in the heart of Amsterdam, built on energy, quality, and connection.
This isn’t just a place to train — it’s a space where style meets substance, and every session feels like an experience. In our raw yet refined setting, we offer high-quality kickboxing, boxing, Pilates, and strength training in small groups — with genuine personal attention.
But what truly sets us apart? Our community.
Here, you don’t just train next to strangers — you move, sweat, and grow alongside people who know your name and push you to go further.
Underground is more than fitness.
It’s a rhythm. A mindset. A way of life.
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What types of classes does Underground offer?
We offer a diverse range of classes, including Kickboxing, HIIT, Hyrox, and Pilates. Whether you’re looking for high-intensity workouts or something that enhances your flexibility and strength, we’ve got you covered.
Our schedule is designed for all levels, so everyone can find a class that fits their goals. -
Do I need experience to join?
Not at all! At Underground, everyone is welcome — from beginners to experienced athletes. Our coaches provide guidance and modifications so that everyone feels both challenged and supported, no matter their fitness level.
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What membership options do you offer?
We offer flexible membership options that suit your needs, including single sessions and monthly plans. You choose what best fits your schedule and goals.
Please note that we don’t offer unlimited monthly memberships.
Feel free to contact us for more information about pricing and the benefits of each option. -
Do you offer personal training?
Yes, we offer personal training sessions tailored to your specific goals. Whether you’re training for a competition, working on your overall fitness, or focusing on recovery, our experienced trainers will help you get the most out of your time in the gym.