Discovering COLD not as an unwanted weather condition but a super powerful health booster has shaped our lives personally and professionally, and we believe that building a closer relationship with cryotherapy may be, or become, a game changer for you, too. This is NOT a digest of the latest research in the field, although you will see numerous references to clinical studies performed to date. This is NOT a textbook, although we believe you will learn a thing or two regardless of your knowledge and experience. Most importantly, this shall NOT be seen as professional advice on how to lessen symptoms of any medical condition, although you will find examples of substantial health improvements thanks to whole body cold. This book is a practical guide to help you use low temperatures safely, effectively, and joyfully, whether you are a team member of a gym, wellness center, or spa, are thinking of starting a business with cryotherapy on the menu, are a client of such business, or are bracing yourself to try cryotherapy for the first time.