Both courses teach the three pillars that form the foundation of the Wim Hof Method— breathing, cold exposure, and commitment (mindset). In the original 10-Week Video Course, the techniques and exercises are explained and demonstrated in a straightforward manner, leaving up to you the situations in which to put these into practice. The Fundamentals course was created to provide more guidance and practical application and teaches you the WHM in the context of real-world scenarios. Each week has its own theme, centered around an area of everyday life that the WHM can help improve— such as stress, creativity, and sleep. This newer course is more polished and features yoga lessons from a professional teacher, as well as one-on-one sessions that allow for WHM practice on the fly.Check out this side-by-side comparison of the video courses for more details.