The Story Behind WaterBow

More than a decade in the making, across three countries. WaterBow is a gentle path to strength, balance, and well-being that feels less like exercise and more like coming home to yourself.

Where movement meets water

Every great idea begins with a simple observation. For us, it was watching people struggle with traditional fitness: feeling intimidated, overwhelmed, or simply turned off by the intensity. Too many people were giving up on movement entirely, not because they didn’t want to feel better, but because nothing felt right.

There had to be a better way. A way that honors your body exactly where it is today. A way that feels good, not punishing. A way that brings you back to a simple truth: movement is meant to be enjoyed.
The answer, it turned out, was water.

The Idea

It started in a group fitness class in the UK.
Weights and reps work if you already love them; for everyone else, classes felt intimidating and were easy to give up on.

Then came a question:
“What if people moved with water instead?”

A lightweight bow, filled with water, changed the room. Every movement set the water in motion, and the body answered.

After a few early experiments, the shape and function fell into place, and they are still the core of the product today.
Version 1.0 was born.

The Craft

The idea crossed to Germany, where it spent years being refined in a single group class studio.

The shape didn’t need to change, but materials were refined, and a complete movement method grew up around the bow, shaped week after week in real classes with people of every age and ability.

That era produced the 2.0 Version: a deep green, opaque bow that people could feel working long before they understood why.

Daniel & Tessa Join the Journey

In the summer of 2022, Daniel and Tessa moved their family from New Zealand back to Daniel’s roots in east Germany.

There Daniel came across the water-filled bow, by then more than a decade in the making, and his body understood before his head caught up.

In early 2024, a German company was founded to take the bow beyond that single studio, and Daniel joined as co-owner and founding investor.

For the first eighteen months, he and Tessa supported the nationwide rollout hands-on with capital, strategy, operations, sales & marketing and opening doors.

An American Dream

Tessa and Daniel had always wanted to live in the USA one day. In mid-2025 the opportunity presented itself, and the family moved to Austin, Texas.

There they founded WaterBow and created Version 3.0:
A translucent body in calm Ocean Blue, so you can watch the water swirl and settle as you move, and hear the soft rhythm that turns every movement into something closer to meditation.

Daniel remains a co-owner of the German company today.

WaterBow arrives in US homes

WaterBow launched in American homes in February 2026. There is only one WaterBow, no home version and no studio version: the same bow works in a living room, a fitness studio, and a physical therapy practice.

It is now finding its way into prehab and rehab settings and into practitioners’ hands, with new movements and programs taking shape alongside physical therapists and movement specialists.

And the story keeps going: the WaterBow “Canoe” is built and ready, an the App is about to launch and much more in the works.

Meet the Team Behind WaterBow

We’re not fitness influencers or overnight entrepreneurs. We’re real people who’ve dedicated our lives to helping others move and feel better. We’ve made this our life’s work because we believe deeply that everyone deserves to age with grace, strength, and joy.

Daniel

Tessa

Daniel Grams

Founder & Strategic Leader

After more than twenty years building businesses abroad, sixteen of them in New Zealand with Tessa, Daniel returned to his German roots in 2022 and met the bow that would become WaterBow. Today he is WaterBow's door opener: with customers, with practitioners, with partners, always with the next idea in his pocket. He is also the product developer behind the WaterBow Canoe and more.

"I've built companies before, but this is different. My own journey with health and longevity taught me how precious mobility and strength are as we age. WaterBow preserves and improves both."

His superpower: Seeing the big picture, and the big opportunity to help millions live better for longer.

Tessa Grams

Founder & Operations Director

Originally from New Zealand, Tessa has been building businesses side by side with Daniel for more than twenty years, and she is the engine of WaterBow: fulfillment, customer experience, finance, supply chain, quality.
She runs the business alongside a family with two teenage daughters, and she couldn't tell you which of the two takes more skill. Daily movement and her own WaterBow practice keep her grounded through both.

"Great products need great systems. I make sure that when someone orders a WaterBow, everything works perfectly, from the first click to their first flow session. The details matter, and that's where I focus."

Her superpower: Building systems that turn vision into reality, then scaling them.

Science Meets Intuition

Over 10 years, we collaborated with research institutions to validate our approach. The research confirmed what our students already knew: this works.

Deep Muscle Activation

Water’s natural instability engages stabilizer muscles—the deep core that protects your spine and improves posture.

Fascia & Flexibility

Flowing movements stimulate fascia, improving flexibility and reducing tension without forcing stretches.

Multiplier Effect

Research showed up to 30% deeper muscle activation compared to traditional exercise.

Mental Relaxation

Water sounds calm the nervous system. Users report entering a “flow state”—meditative and restorative.

Joint Friendly

Adaptive resistance makes it nearly impossible to overdo it. Your body naturally finds its safe range.

Time Efficient

Just 15-20 minutes, 2-3 times per week shows meaningful results. Fits real life.

What Others Are Saying

"Ajambow celebrates its world premiere as a sustainable group fitness and health innovation. This innovative training device filled with water offers a unique combination of strength training, mobility work, and mindful movement."

"Goosebumps. Ajambow celebrates its world premiere... The versatility is incredible—everything is built in. Participants love the music, the flow, the sound of the water. It's so relaxing—you can really feel it calming you down. It doesn't feel like sport at all—it's just fun."

"What sets Ajambow apart is its holistic approach. The water-filled training device combines functional training with the meditative quality of flowing water sounds. It addresses modern health challenges—back pain, stress, lack of mobility—in a completely new way."

"Finally, a fitness concept that puts sustainability first—not just in the product itself, but in how it helps people sustain their practice over time. When movement feels this good, people stick with it."

Our Promise to You

We’re here to be your partner in living a longer, healthier, more joyful life. WaterBow is the result of 30 years of experience, 10 years of development, and a lifetime of caring about your well-being.

Accessibility

Movement for everyone, regardless of fitness level, age, or experience. WaterBow meets you exactly where you are.

Sustainability

Made with recycled materials, made with care, designed to be part of your life for years to come.

Community

You're not alone. Join a supportive community of people who believe movement should feel good.

Authenticity

No hype, no false promises. Just real people, real science, and real results over time.

Be Among the First

Experience WaterBow and join the movement