Bessel van der Kolk is a Boston-based Dutch-American psychiatrist, author, researcher and educator.

Casandra Brené Brown is an American academic and podcaster who is the Huffington Foundation's Brené Brown Endowed Chair at the University of Houston's Graduate College of Social Work and a visiting professor in management at the McCombs School of Business in the University of Texas at Austin..

James Nestor is an author and journalist who has written for Outside, Scientific American, Dwell, National Public Radio, The New York Times, The Atlantic, Men's Journal, the San Francisco Chronicle Magazine, and others.

Daniel J.

Melanie Lee Robbins is an American author, podcast host, and lawyer..

Known worldwide as **"The Iceman,"** Wim Hof is a Dutch extreme athlete and multiple Guinness World Record holder who has revolutionized our understanding of human potential through his extraordinary ability to withstand freezing temperatures.