LearningCenter How to Use the App ⇢ Learn how to change sounds, back-up your data, change the annoying robotic voice, and more. Learn the fundamentals of how to practice the Breathing Exercise, Apnea Tables, and Wim Hof. How to Practice ⇢ Workouts Info ⇢ Have you ever wonder what the workout with the strange name means? In this section, you can find a workout description. In this section, you can find books, articles, and video clips that can be beneficial. External Sources ⇢