SISU
si.su | \ si – sue \
SISU is a Finnish philosophy for how to live life. The concept of SISU has no direct translation but it is generally understood to mean an extraordinary determination, courage and resoluteness in the face of extreme adversity. It is an indomitable spirit, a stoic strength, a tenacity of purpose, bravery, grit and resilience, all while embodying the highest moral virtues of honour and integrity.
SISU 4 Program: July 21st – November 2nd, 2025
Uncommon Work,
By Uncommon People,
For Uncommon Legacies
Join These Ironminds in Achieving the Extraordinary
“To get to the finish line yesterday, when it was completely done, was just an amazing sense of satisfaction. Even going to bed last night, I was like “this is brilliant”.
“Delighted I got through it. It was definitely the most intense physical and mental, psychological day of my life.”
“”It was life changing in many ways. I would never have comprehended the amount of work we did during the Crucible was actually possible. ”
Break Through Mental Barriers
and Embrace Inner Strength
Inside every person lies a reservoir of untapped strength—a resilience shaped by life’s challenges and the assured resolve to rise again. The Finnish call this unshakable determination SISU: the grit to endure when the odds are against you, the courage to move forward with integrity, and the strength to embrace struggle as an opportunity to grow.
Our SISU Program is your guide to uncovering this inner force and breaking free from the doubts, fears, and insecurities that have held you back. These challenges don’t define you; your ability to overcome them does.
Through this life-enhancing 15 week program, you will:
- Harness Your Inner Strength to rise above obstacles and move forward with integrity.
- Destroy Limiting Beliefs and rewrite the story of what’s possible for you.
- Develop Unshakable Discipline to face challenges with focus and determination.
- Connect With Who You Are Meant to Become and what you are truly capable of.
This isn’t just a program; it’s a journey to unveil your potential, embrace life’s challenges, and emerge stronger, more trusting, and more connected to your true self.
Tap into the SISU within you and transform adversity into your greatest strength
Are you ready for SISU? Take the program readiness assessment to see where you stand
Hear what our SISU athlete’s had to say about their 15 week preparation program
“Week by week, the further you went on, the more you learned about yourself, the more you learned about your thoughts, and then furthermore, you learn how to push through.”
Éanna Ryan – General Manager
SISU Athlete No.9
“The main visualization process is what I like to use before I do the training. I find it’s the one that really helps you the most and then having your mental reset ready when you hit the wall.”
Brian Kelly – Senior Executive
SISU Athlete No.7
“In some of the training, you have a lot of negativity but with all the training on the mental side, you get through that, and when you finish the workout you realize – this is pretty powerful stuff.”
Eoin Fleming – Company President
SISU Athlete No.4
The Crucible Loop
A belief we hold at The Ironmind Institute is ‘the work is everything & everything is the work”. This simply means; the work (the physical action we have committed our attention and intention to) holds everything we need and want in life. Therefore based on this belief and knowledge we have designed a training process to get the most out of and maximise the considerable time, effort and energy committed by our athletes. We call it The Crucible Loop.
Before enlightenment; chop wood, carry water. After enlightenment; chop wood, carry water.
– Zen Buddhist Kōan
Elements of The Crucible Loop
Within this time period we introduce the mental model, method or process we will be specifically focusing on employing during this loop; these will include our Parameters of Adherence protocols, Rehearsal Visualisation techniques, Mental Anchor preparation, alongside applicable physical and behavioural standards.
Athletes to be guided through our aligned 4 part ‘Ready to Train’ process of Mobilise – Move – Activate – Prime by our Crucible coaching team to ensure all athletes are prepared to physically maximise the opportunity soon to be presented to them by the stimulus of the work.
The most important section of each Loop; The Work is where all The Ironmind Institute’s training methodologies, process structures and the enlightening reality of extreme physical challenge come together creating the unique forging experience of The Ironmind Crucible.
Broken into 3 segments of, 1. A physical compensation practice with a focus on the demands of the following Loop (coach led) 2. A journaling practice of reflection based upon The Ironmind Institute’s ‘What Comes Up’ process (guided) 3. Time to refuel, recharge and hydrate before the next Loop begins.
‘’A gem cannot be polished without friction, nor a man perfected without trials’’
Seneca
3 Strikes and You Are Out
Each Crucible athlete will have their own individual targets throughout the various Loops of their SISU experience that they must attain. These targets are relative only to that athlete and will be measured off their training program metrics. These targets are fundamental to creating the state we need all our athletes to experience, to therefore build the neural association between the action (mental strength method) and reward (the feeling of overcoming destabilising states of negativity).
Alongside these individual targets, it is expected that you can attain the SISU Crucible prerequisites (minimum standards) if/when tested during the experience. If an athlete does not attain their respective individual target or prerequisites they will receive a strike through a box on the back of their t-shirt. If an athlete obtains three strikes over the course of a Crucible, they will have failed the experience and will be immediately excluded from continuing.
The Full SISU Program Package
What You Receive
Your commitment to The Ironmind Institute’s SISU Crucibles gets you the highest standards and quality of;
SISU Training Programme
SISU Training Programme
Each SISU athlete will receive an Ironmind Crucible training program to prepare them for their Crucible experience. The programs range in durations of 17, 15, 13 and 10 weeks and are designed to prepare the athlete to the highest possible physical & mental capacities to take on the demands of their SISU Crucible. The length of program an athlete receives is dependent on when they sign up to his or her Ironmind Crucible experience.
SISU Web 'Check In' Series
SISU Web 'Check In' Series
Our group check-ins are facilitated online get-togethers for your Crucible group where you will be able to connect with your fellow Crucible athletes to learn about their training experiences, share your own training experience and ask questions of the group facilitator around your pre-Crucible training programme.
Mental Preparation Program
Mental Preparation Program
Aligning with our pre-SISU training program, each athlete will receive a mental preparation program designed and prepared by Damian Browne focusing on emotional robustness for SISU.
Athlete’s Communications Hub
Athlete’s Communications Hub
Membership of private SISU Crucible Community and SISU Pioneer Crucible Group on WhatsApp for peer to peer athlete support, motivation and direct communication with Ironmind coaches.
SISU Crucible
SISU Crucible
The bespoke Damian Browne designed and coached 12 Hour SISU resilience building, extreme physical endeavour, multi discipline training experience using the very best in training equipment.
Award Winning Nutrition
Award Winning Nutrition
The award winning Misunderstood Heron team create all meals throughout the course of your Crucible experience, keeping our athletes fuelled to the highest standard, quality and taste to achieve something extraordinary.
First-Rate Accommodation
First-Rate Accommodation
2 night accommodation in the magnificent Killary Lodge. Set in the raw and rugged beauty of North Connemara, the rustic yet elegant lodge is the perfect mix of isolation, class and …. for our Crucibles.
Photography & Videography
Photography & Videography
Within 48 hours of completing SISU Crucible athletes receive their personally focused ‘in action’ images taken by our professional photographer. Within 3 weeks of completing athletes receive a group focused video of their Crucible experience.
Crucible Gear
Crucible Gear
Athletes will receive a carefully procured Ironmind day rucksack including essential items to complete your crucible - training t-shirts, journalling diary and other essential items.Are you ready for SISU? Take the program readiness assessment to see where you stand
Location
You will be billeted in luxury accommodation for 2 nights at the magnificent Killary Lodge, Killary Fjord, North Connemara. This is a rugged, harrowing, hard, unforgiving, beautiful and deeply moving place that resonates deeply with us and in our experience, is the perfect place to build mental strength and resilience, and to forge greatness.
Nutrition
All wholesome, nutritious & specially prepared meals are by the wonderful team at the Misunderstood Heron, you will have dinner every evening (x 2) that you’re with us, breakfast on every morning (x 2), lunch every day (x1) & you will also get a specially prepared fuel bag full of quality nutritious snacks that will keep you fuelled as you complete SISU.
Equipment
The gym and studio spaces at our base in Killary Lodge will be fitted out and equipped with the very best equipment including ROGUE rigs, barbells, dumbbells, bumpers, plates & stations, alongside Concept 2 RowERGs and BikeERGs. Our training spaces have been specially designed to ensure optimum performance using our BODY FIRST mental methods.
IronMind Crucible Coaches
Damian Browne
Fitness Coach
Damian Browne is the co-founder of The Ironmind Institute and Head Coach of The Ironmind Crucibles. A peak performance athlete, extreme adventurer and former professional rugby player, Damian can truly claim an Ironmind having achieved extraordinary feats of human performance across a broad range of disciplines and pursuits. Damian will guide you through your Crucible using his revolutionary psychological strength models, methods and tools he has created and developed.
Johnny O’Connor
Fitness Coach
Johnny O’Connor is the Ironmind Institute’s Head of Performance and a powerhouse in extreme physical training. From international rugby to elite football clubs, he’s a strength and conditioning authority, optimising athletes’ performance. With a legacy in rugby, Arsenal, Galway United, and Connacht Rugby, he’s now shaping Galway hurlers, a testament to his passion and expertise in the pursuit of excellence in physical training.
Frequently Ask Questions
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2 night accommodation at Killary Lodge.
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All meals (2 x evening dinner, 1 x lunch, 2 x breakfasts) catered to you by the award winning Misunderstood Heron team.
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The Ironmind Crucible rucksack with all the requisite training gear for your crucible experience.
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Your comprehensive 103 day Ironmind SISU Crucible training program designed to prepare the athletes to the best possible physical and mental state to take on the Crucible challenge.
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Intra training program online workshops (3) and individual Crucible group communication with Damian and his coaching team.
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Unparalleled access to unique training methods, coaching and guidance from Damian Browne and his team of world class coaches.
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Personalised ‘in action’ professional photography & videography digital content for online use
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The Ironmind Crucible completion package.
Heart conditions are a disqualifier for participating in any crucible.
- You quit. (Our coaches will do their utmost to prevent this from occurring)
- You don’t achieve your individual target metrics on 3 occasions. Read more about this here.
- You don’t adhere to and attain the required standards of behaviour on 3 occasions – This is at the discretion of the Head Coach exclusively.