PP Graphene Schumann Neck WrapPP Graphene (PP Shm x) Medical grade Schumann Neck Wrap, enhanced with Schumann Technology for optimal comfort and relief. What's Schumann Technology? In 1954, German physicist 'Winfried Otto Schumann' introduced the concept of "Schumann Wave" (). This natural signal, with a frequency of about 8Hz, resonates within the Earth's atmosphere. Human cavities resonate within the same frequency range, including the brain's alpha waves. This resonance
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