Are you ready to feel vibrant, healthy, ALIVE?

Experience Jackson Hole's Wim Hof Style Cold Immersion with local experts.

Imagine… looking into a bath filled with ice water, or being out in the wild staring into a freezing lake or river, and having both the skill and confidence
to go ALL IN

While going into freezing cold water might be one
of the more challenging things you’ll do,
it’s also one of the most beneficial for your
health and well being.

This unique experience also creates the most powerful group bonding imaginable.

The ALL IN Cold Plunge Adventure offers both the training and experience of a lifetime:

“I’ve never seen anything help me and others BREAK THROUGH our perceived limitations more than the ALL IN experience with Grand Dynamics! My advice? Do it! YOU WON’T REGRET IT.”

Brandon Smith, Insight Business Advising

Our program integrates the skills and experience
you won’t find anywhere else, including:

• Powerful breathing techniques
• Progressive cold exposure experiences
• Adventure psychology and mindset
• Experiential learning
• Flow theory

All to help you live a vibrant life of Health,
Happiness and Success.

In addition, the techniques that your team members take away will continue to benefit each person and your organization long after the training.

Learn from Tim Walther in a live or virtual program. Have a peek into Tim’s Journey into the cold and a sample ALL IN experience.

It might seem hard to believe that exposing yourself to extreme cold could be healthy and beneficial, but science is showing us the true power of these practices including increased energy, heightened focus, improved sleep, and a stronger immune system, among many others.

“WOW! The BEST THING I have done all year. Our family will never forget going ALL IN!

Corey Milligan, New West Knifeworks

The techniques that we teach in this program are being used by some of the world’s most successful leaders and athletes.

Tony Robbins

Tim Ferriss

Joe Rogan

Laird Hamilton

Does it seem impossible to imagine you and your team ente­ring near freezing water for 2 minutes?

With the right training, it’s actually surprisingly easy, and most people – even people who HATE the cold report:

I generally HATE the COLD, and I was very skeptical when I joined the ALL IN program. Surprisingly, I found that it was much EASIER than I thought thanks to the techniques they taught us. Now that I’ve done it, I feel much more EMPOWERED in myself and I think, If I can do that, then I can accomplish anything!”

Nancy M.


Rapidly Builds

Strengthens our

Incredibly powerful
team bonding

Empowers people
and increases

Cardiovascular health
(strong heart)

Reduces stress

Creates more energy

the body


Connects the body and
mind through specific
beathing patterns

techniques for
rapid rewarming

Turns the impossible into



We work with your team to customize an event to meet your participant abilities and your corporate messaging. This is one of the most powerful group bonding activities we have experienced in our long tenure working in corporate training. We can host your group in Jackson Hole, WY or conduct cold immersion events at the location of your choice.




If you want to experience the magic of our ALL IN program, but don’t want to travel, we can also conduct the training online. This is an ideal way to cost effectively deliver this experience to people who can’t come together for an in-person event. In these events, you’ll learn the skills to safely go ALL IN at your home or nearby with expert guidance every step of the way.




If you are in Jackson Hole with your family or a group of friends, and want to experience the ALL IN adventure, then we’re happy to teach your group in this stunningly beautiful setting. Then, we’ll choose one of Jackson’s scenic and wild rivers to go ALL IN!



Tim Walther is an expert in applied business psychology and experiential training and development. As President of Grand Dynamics International, Tim has led business operations and the delivery of global team and leadership development programs for over 20 years.

He has worked with countless business executives and teams in facilitating the development of the most important business asset – our people. Tim is an avid rock climber and mountaineer including accomplished routes in the Teton Range and first ascents in remote corners of the globe, including “The Spirit of Mokwai,” a bold adventure featured in Climbing Magazine’s EPIC Ascents. His eclectic oceanic adventures include open water swims from Alcatraz, abalone diving and blue water hunting.


What are the physical dangers?
Are there any people who should not participate in this experience?

If you have any serious physical conditions, especially involving oxygen influx, blood pressure and/or (cardio)vascular complications— we strongly advise that you consult a medical professional. Out of precaution, we also advise against the practice if you are pregnant.

Is this suitable for children?

The breathing techniques can cause lightheadedness.
We advise that children under the age of 16 are supervised by a parent or legal guardian. Please be careful with regard to cold exposure, and build this up gradually. We can create different levels of challenges for different age groups.

Is this experience safe if I’m pregnant?

If you are pregnant, we advise against practicing Cold Immersion. We do not know how this practice affects the health of the baby. 

If you have other questions, please contact us