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We, and the universe we live in, produce and operate in a sea of natural and unnatural electrical and magnetic fields. The earth, for example, pulses at about 10 Hz, like a small engine. Our bodies, as you may remember from chapter 1, are really electromagnetic machines. We simply can't move a muscle or produce a thought without an electrical impulse - and wherever there is electricity, a magnetic field is also produced, which is why we link the two together into one word