(Sandy Brightman) The Earth has a natural background frequency of 7.83Hz, known as the Schumann Resonance, which corresponds to alpha brain waves in humans. When this frequency is thrown out of balance by other energies (either natural or manmade) we can also go out of balance. Our immune systems can weaken, thus inviting any number of illnesses to enter. NASA had to develop Earth Pulse Generators to mimic this natural frequency in spacecraft after finding astronauts lost tone and body mass living without the background 7.83Hz frequency.