Great Book written by William Campbell Douglas II, M.D give you all the information you need to learn about EWOT. The Von Ardenne study is referenced throughout the book.
Simply breathing oxygen while exercising is an inexpensive and effective way to deliver more oxygen to the body and thereby improve mental and physical health. Developed in the late 1960s by Professor von Ardenne, EWOT is simple and profound in its effects for optimizing the health benefits from even mild or moderate exercise. You're going to want to 'EWOT'.
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