By Icebatu · Johor Bahru
Engineered biological reset.
A 7-hour guided retreat at a private estate 40 minutes from JB CBD.
Beta rate RM 588 closes 15 May 2026 · 5 seats remaining · Reserve now
"Your brain isn't broken. It's just never been allowed to shut down."
Johnson Koh, Founder
What 9hz is
9hz is not a yoga retreat. It is not a spa day. It is not a spiritual experience.
It is a seven-hour curated reset — engineered around the science of contrast therapy, alpha brainwave entrainment, and parasympathetic recovery.
The format is deliberate: yoga to soften the body, cold exposure to interrupt the loop, silent lunch to slow the mind, sound bath to deepen the release, sharing circle to integrate what shifted.
You arrive carrying everything. You leave lighter — measurably, biologically, immediately.
The format.
10:00 am – 5:00 pm · Six modalities · No phones
10:00 · OPENING
Arrival & Intention
Arrive at the villa. Welcome tea, phone-locker, written intention card. The day begins when we stop running.
10:30 · MOVEMENT
Vinyasa Flow
75 minutes of gentle, breath-led movement to warm the body and downshift the sympathetic nervous system.
12:00 · CONTRAST
Cold Plunge Protocol
The pivot point. Wim Hof–style breathwork followed by 2–4 minute ice immersion. Cold shock = chemical reset.
13:00 · SILENCE
Silent Lunch
A plant-forward meal eaten without speaking, without screens. The body absorbs the morning. Taste returns.
14:30 · CRAFT
Aromatherapy DIY
Blend your own roll-on from essential oils tied to your intention. A take-home anchor for the integration ahead.
16:00 · INTEGRATION
Sound Bath + Sharing Circle
Tibetan bowls drop the brain into theta. Then a structured sharing circle — speak only if you want to.
The venue.
Set against the foothills of Gunung Pulai, the villa is a sanctuary of century-old trees, koi ponds, a 12-metre lap pool, and glass pavilions that open onto manicured gardens.
This is not a hotel ballroom. It is not a yoga studio. It is a home, opened for one day at a time — small enough that you feel held, large enough that you can disappear.
Limited to 10–12 guests per edition. Phone-free zones. Soft cotton robes provided.
Who this is for.
9hz is for you if
You look fine from the outside. Founder, operator, mid-senior manager. You haven't truly switched off in years. You tried meditation apps and yoga and bounced off both. You don't need slower — you need an interrupt.
You search at 2am for
"JB retreat near me." "Burnout 怎麼辦." "How to switch off." "Digital detox Malaysia." You scroll. You close the tab. You're still tired.
9hz is not for you if
You're looking for a resort holiday, a spiritual awakening, or an Instagrammable backdrop. You should also not come if you have uncontrolled cardiovascular conditions — the cold immersion is optional, but a doctor's check is wise.
It's biology, not vibes.
8–12Hz
Alpha brainwave state
The frequency your brain enters during deep relaxation. The 9 in 9hz sits at the heart of this range. Sound bath and breathwork pull you there.
↓ 28%
Cortisol drop
Studies show contrast therapy reduces salivary cortisol by 20–30% within hours. Cortisol is the chemistry of your tiredness.
↑ PNS
Parasympathetic rebound
After cold immersion, your body floods with parasympathetic activity — the "rest, digest, repair" state most adults haven't accessed in months.
CSP
Cold shock protocol
2–4 minutes at 8–12°C triggers a noradrenaline spike of 200–530%. The result: hours of mental clarity that no caffeine matches.
All in.
No upsells.
Investment
Beta cohort · closes 15 May 2026
Limited founding rate
Regular
Full edition price
Price rises after 15 May 2026
What this is not
This is not a discount. The beta price honors the first cohorts who chose us before social proof existed.
Per-hour comparison
RM84/hr at beta · RM114/hr at regular. A Singapore bathhouse single session: RM60+/hr.
Founding Member
The first 12 guests of each calendar year become Founding Members. They lock in the beta rate forever, get priority on every future edition, and a complimentary seat at our annual founders' reunion.
Johnson Koh
Founder, Icebatu & 9hz
Hosted by
Johnson Koh.
Engineer. Founder. Recovered burnout case.
I spent my twenties building product at a Taipei gaming software company, after a university stint in Ireland. By 28 I had the title, the income, and a nervous system that no longer remembered how to switch off.
What pulled me out wasn't a meditation app. It was an onsen in Kyushu, a friend who insisted I try cold immersion, and the slow realization that burnout has a biology, not just a psychology.
I built 9hz, Icebatu, and Third Space Wellness so the version of me from three years ago would have had somewhere to go.
Upcoming editions.
31 May 2026 (Saturday)
Private villa near Gunung Pulai
Next edition — date TBC. Join the waitlist to be notified first.
Join waitlist via WhatsApp →Questions.
A private villa near Gunung Pulai, ~40 minutes from JB CBD. Full address shared after booking confirmed.
Drive via Tuas (recommended) or Causeway. Pickup shuttle from Kranji/Bugis can be arranged for groups of 4+ — ask us.
Yes, with caveats. The cold immersion is optional and structured — we walk you through breathwork first. If you have heart conditions, hypertension, or are pregnant, please consult your doctor first.
Just yourself, swimwear, and a willingness to put your phone in the locker. We provide everything else.
Full refund up to 14 days before. 50% credit toward a future edition between 14–7 days. No refund within 7 days, but you can transfer your seat to a friend.
No. The methods appear across many traditions, but we frame them through science. No chanting, no doctrine, no agenda.
Yes, encouraged. We have a 2-for-RM1,100 founding pair offer for friends booking together at beta rate. Ask us.
Yes. Private 9hz for groups of 6–10 at flexible dates, flat rate RM4,800. Corporate team resets available — message us.
Ready when you are.