Low-pressure, low-oxygen sports gym AIRNIX | High altitude training in Tokyo [Setagaya, Komazawa University, Gakugei University, Sangenjaya, Tokyo Metropolitan University]

Just Walk. Just Start. Just AirNix.

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Ever Felt This Way?
Why People Choose AirNix?
How It Works
Testimonials
FAQ
Train Safe. Train Smart.
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Burn Fat and Recharge

at the Cellular Level

Just by Walking

Start your transformation - right from your cells.

Ever Felt This Way?

You started the gym…
but couldn’t stay consistent.
You dread high-intensity workouts…
but still want to feel fit and confident.
Your schedule’s packed…
and long sessions just don’t fit in.

You're not alone, and you don't have to give up

is your solution and your companion.

Why People Choose AirNix?

With a smart, high-altitude environment simulating 2,500 meters above sea level, just 30 minutes of walking here burns 1.5-2× more fat than a regular workout - without pushing your limits.

No time?

At AirNix - just a few sessions a week still bring results!
Don’t like intense workouts?

At AirNix - burn fat, boost endurance without exhaustion!
Lost motivation?

AirNix gets you back on track - this time, it’s different!

AirNix - Fitness, redefined.

How It Works:

Unlock Change from the Inside Out

AirNix isn’t just about moving more - it’s about transforming your body from the cellular level.

Fuel Every Breath:

By boosting red blood cells and hemoglobin, your body becomes a master at delivering oxygen where it's needed most - giving you more energy, more clarity, more you.
Ignite Your Inner Engine:

Activating mitochondria supercharges your metabolism, helping you burn more - even at rest.
Revive Your Flow:

With stronger capillaries and better circulation, you'll feel lighter, warmer, and more alive - say goodbye to swelling and that constant chill.

Testimonials

Ayaka

27 years old

“Just after 3 months, I lost 5kg - without pushing myself too hard. I simply walked in the calm, quiet space of AirNix, and the amazing part is that I didn’t just feel lighter physically, but also more positive and uplifted every day.”
Kenji

39 years old

“Just after 3 months, I lost 5kg - without pushing myself too hard. I simply walked in the calm, quiet space of AirNix, and the amazing part is that I didn’t just feel lighter physically, but also more positive and uplifted every day.”

FAQ

Is it hard to breathe in a low-oxygen room?

The oxygen levels in our studio are carefully controlled to ensure safety. The environment remains comfortable and safe for everyone, regardless of age or fitness level.
Is training in a low-oxygen room safe for beginners or older adults?

Absolutely. AirNix’s environment is precisely controlled and monitored. Many of our members are beginners or in their 50s–60s. It’s safe, gentle, and effective.
How often should I train at AirNix to see results?

Most members see great results with just 2–3 sessions per week. Even short, consistent walks in our low-oxygen rooms can make a big difference.
Do I need to follow a strict diet to get results?

Not at all. While healthy eating helps, AirNix focuses on boosting your metabolism naturally — so even small lifestyle changes can bring visible progress.
What if I feel dizzy or tired during a session?

That’s rare, but our team is always nearby to support you. We also guide you to adjust intensity gradually — so you feel safe and comfortable throughout.

Train Safe.
Train Smart.
Train Your Way.

At AirNix, your well-being comes first.

Our certified female staff are always by your side, ensuring a safe, supportive environment.
We monitor your oxygen saturation (SpO₂) in real-time - so you can focus on growing stronger, every step of the way.
Whether you're a beginner or just starting again, especially if you're a woman - you're more than welcome here.