FAQs

Explore our schedule and book your preferred session directly through our website or booking platform. Choose your experience, select a date and time, and complete your booking using an existing credit, membership or new purchase. 

All sessions are subject to availability, and your spot is confirmed once you receive your booking confirmation.

Absolutely. You can purchase an entry or gift voucher for someone else, or use an eligible guest pass included in your membership. Regular credits and credit packs are personal and cannot be shared or transferred without KEEN’s prior approval.

Plans change. You can cancel or reschedule your session through your booking account. For regular bookings, cancellations are free up to 12 hours before the session. Active monthly members benefit from a shorter cancellation window of 6 hours, subject to their membership conditions. If you cancel within the applicable window, your credit is returned to your account.

If you cancel after your applicable cancellation deadline or don’t attend your booked session, the credit used for the booking will be forfeited, or the applicable no-show charge will apply. For Unlimited memberships, additional no-show rules may apply as specified in your membership conditions.
 

For guided sessions, we recommend arriving at least 10–15 minutes early to settle in and prepare. Once a guided session has started, we are unable to let you join. This protects the experience and safety of everyone in the room. Late arrival does not entitle you to a refund or replacement credit.

For self-guided sessions, you can arrive late, but your session will still finish at its originally scheduled time.

Occasionally, we may need to cancel or reschedule a session for operational, technical or safety reasons. If this happens, we’ll notify you and generally offer an alternative booking or restore your credit. If an appropriate alternative isn’t available, a refund may be provided in accordance with our terms and applicable law.

Not always. Special events, workshops and private experiences may have their own cancellation and booking conditions. Any specific conditions will be communicated before purchase.

Single Entry - Perfect for occasional visits or discovering KEEN at your own pace.

Credit Pack - Multiple sessions purchased together at a reduced price per session, with a defined validity period.

Membership - Designed for making recovery a regular practice, with recurring access and additional benefits depending on your membership.

Single entries purchased at the regular single-entry price are valid for 10 years from purchase. Credit packs have specific validity periods, which are communicated before purchase. Promotional offers and introductory packages may have different conditions and validity periods. You can find the conditions applicable to your purchase in the product details or purchase confirmation.

Credits and credit packs are personal and intended for one person only. They cannot be shared or transferred to someone else without prior approval from KEEN. We may approve exceptions on a case-by-case basis. If you’d like to bring someone along, a separate entry or an eligible membership guest pass is usually the easiest option.

We understand that life doesn’t always go according to plan. If you’re unable to use your credits due to a documented illness, accident or pregnancy-related medical restriction, please get in touch. We’ll review your circumstances and consider an appropriate extension in accordance with our terms and applicable law. Extensions for holidays or other personal reasons may be granted as a gesture of goodwill but are not guaranteed.

Our monthly memberships are designed to help you build a consistent recovery practice. They have an initial minimum commitment of three months and then renew automatically on a monthly basis until cancelled. The number of included sessions and additional benefits depend on your chosen membership.

You can request cancellation at any time, including during the initial three-month period, with at least 30 days’ notice. Your membership cannot ordinarily end before the initial three-month commitment has been completed. After that, cancellation takes effect at the end of the applicable membership month, provided the notice period has been met. Contact our team or use the available membership management function to request cancellation.

If you need to pause your recovery practice, please contact us before your next billing date. Whether a pause is available, and under which conditions, depends on your membership and the reason for the request. For documented medical circumstances, we’ll review an appropriate solution individually.

No. Monthly membership credits are intended to support a regular recovery routine and do not accumulate or carry over into the next billing period, unless expressly agreed otherwise.

Eligible memberships include guest passes that you can use to introduce someone to KEEN.

The number of passes, their validity and the eligible experiences depend on your membership. Guest passes cannot be redeemed for cash or carried over unless expressly stated otherwise.

Unlimited memberships give you access to the eligible experiences specified in your membership, subject to availability and booking requirements.

Special events, workshops, private experiences and other separately priced offerings are not automatically included.

To keep access fair for everyone, reasonable booking restrictions and no-show rules may apply.

A KEEN gift voucher is a way to give someone an experience they can make their own.

Monetary gift vouchers can be redeemed against eligible KEEN services and are valid for 10 years from the date of purchase.

Specific experience vouchers or promotional gift offers may be subject to different product conditions.

Welcome. You don’t need to be experienced with sauna, cold exposure or breathwork to join us. Our guided experiences are designed to help you explore recovery with support from a trained coach. If you prefer to move at your own pace, our self-guided experiences offer more flexibility. Not sure what to choose? Reach out to our team and we’ll help you find the right starting point.

Guided classes follow a curated experience led by a KEEN coach, combining elements such as heat, cold, breathwork, music and reflection. Solo Journeys allow you to use the designated recovery facilities independently, within your booked time and according to our safety guidelines. Both are ways to recover. The difference is how much guidance, structure and shared experience you’re looking for.

Come well hydrated, avoid arriving on a very full stomach and give yourself enough time to settle in. We recommend arriving 10–15 minutes before your session. Before your first visit, you’ll be asked to complete our Health and Safety Declaration. You don’t need to push yourself or prove anything. Our coaches will help you find an appropriate level of participation.

KEEN CONTRAST CLASSES
KEEN is a textile sauna, so swimwear is required for all recovery classes. Please bring your own swimsuit and a water bottle. Glass bottles are not permitted.

KEEN MOVEMENT CLASSES
Bring sportswear that lets you move freely.

WHAT WE PROVIDE
• Two towels: one for the experience and one for showering.
• Hot tea or water to keep you hydrated.
• Changing and shower facilities, including body wash.

To maintain our hygiene standards, KEEN is a footwear-free space beyond the check-in area. Thank you for helping us keep the studio clean and comfortable for everyone.

KEEN is a contemporary wellness space designed to foster recovery and connection. At its heart is a custom infrared biosauna accommodating up to 35 guests, with adjustable temperature, humidity and lighting to suit different relaxation and recovery protocols.

Our four ice baths range from 0–10°C, with adjustable temperatures to suit different protocols and preferences. Advanced recovery tools include massage guns, compression boots and self-massage sticks.

Flexible treatment and movement areas adapt to different experiences. Non-gendered changing stalls, secure lockers and a tranquil lounge with warm tea create space to pause, recharge and connect

No. Participation should always reflect your individual health, experience and comfort. Our coaches can guide you through the available options, but you should never feel pressured to exceed your limits. Recovery is about developing awareness and capacity, not enduring as much discomfort as possible.

Appropriate exposure depends on the temperature, your health, your experience and how you feel on the day.

FOR GUIDED CLASSES
Follow your coach’s instructions.

FOR SOLO JOURNEYS
One way to explore the contrast between hot and cold is to begin with 15–20 minutes in the sauna, followed by a 1–3 minute cold plunge, then 10 minutes of rest in the tea lounge. Repeat only if you feel well and it is appropriate for you. These times are examples, not targets: shorten or skip any step based on your individual circumstances. Follow posted safety instructions and leave the sauna or cold water immediately if you experience concerning symptoms. There is no single “right” way to explore heat and cold.

We encourage you to disconnect and be present during your experience.

Please respect other guests' privacy and avoid photography, filming or phone anywhere in the studio. 

You'll find us at Viaduktstrasse 25, Zurich, in the Viadukt area.

We recommend arriving by public transport, bicycle or on foot where possible. If you're coming by car, please allow extra time to find parking nearby.

If you've misplaced a personal belonging, please contact our team as soon as possible with a description of the item and the date of your visit.

We'll check whether it has been handed in and help you retrieve it where possible. 

Heat, cold-water immersion and breathwork can be beneficial experiences, but they also involve physical and psychological risks and may not be suitable for everyone.

Your ability to participate depends on your individual health circumstances.

If you have a medical condition, are pregnant, take medication that may affect your response to heat or cold, or are otherwise unsure whether participation is appropriate, please seek medical advice before attending.

Pregnancy can affect how your body responds to heat, cold and certain breathing techniques.

We ask you to discuss participation with your healthcare professional before booking. Some activities may need to be adapted or avoided.

Please inform our team of any relevant medical restrictions so we can discuss whether an appropriate experience is available.

Please seek professional medical advice if you're unsure whether sauna, cold exposure or breathwork is suitable for you.

Before your first session, you'll be asked to complete our Health and Safety Declaration. You should also inform KEEN of any material changes in your health that could affect safe participation.

Our coaches can guide the experience, but they cannot replace individual medical advice.

The KEEN Experience
The KEEN experience is built around peak experiences that involve placing your body in hot + cold environments. Guides help facilitate your experience, but we encourage you to take responsibility for yourself.

Readiness and Safety
At KEEN, your safety is our highest priority. All our team members are trained and certified in Basic Life Support and First Aid, equipped to manage incidents with expertise and care. We maintain a comprehensive emergency protocol, including on-site access to a defibrillator, and coordinate promptly with emergency services in critical situations. Your safety is at the heart of everything we do.

Ice Baths
At KEEN, we uphold the highest standards of hygiene and safety for our ice baths. Treated with health-approved ozone and chlorine and maintained in full compliance with local health regulations, our baths are cleaned daily and tested every 6 hours. 

Facility
The KEEN crew is committed to creating a safe space for our community. We keep all our high traffic areas clean and clear throughout the space so that your experience may be safe, following a strict cleaning protocol. 

Your Role
We invite all guests to take an active role in maintaining our studio — placing used towels in hampers and discarding tea cups after use helps foster a community rooted in care and respect. For more details about our quality standards, feel free to connect with us at [email protected]

Active Recovery is about giving recovery the same intention we usually give performance.

At KEEN, we combine practices such as heat, cold, breathwork and sensory experiences to help you reconnect with your body, recover from physical and mental demands, and develop a more conscious relationship with stress and recovery.

It's not about being calm all the time. It's about building the capacity to respond to what life asks of you.

At KEEN, our coaches are seasoned professionals with diverse health backgrounds. Each one has completed our internal KEEN Academy (200h), where they refine their skills in breathwork, contrast therapy, group facilitation, psychological first aid, and medical safety.
 
External qualifications include:

• Master’s in Physical Activity and Health Promotion
• Bachelor’s in Physiotherapy
• Master’s in Psychology
• Wellbeing & Holistic Health Coaching
• Breathwork Certification
• Wim Hof Method Certification
• Free-diving Certification
• Personal Trainer Certification

With a blend of expert knowledge and hands-on experience, our coaches are dedicated to supporting you in your journey towards active recovery and holistic well-being.

Our experiences are primarily offered in English.

If you have a specific language preference, contact our team before booking and we'll help you find a suitable experience.

All KEEN group sessions are officially Qualicert certified - a testament to our dedication to exceptional service, expert coaching, and impactful education.

All KEEN packages used for group classes may qualify for reimbursement through supplementary Swiss health insurance, turning your commitment to wellbeing into even greater value.

For questions about bookings, memberships, health considerations or anything else, reach out to us at [email protected].

We're happy to help you find the right experience.