Thousands of years ago humans walked barefoot on earth and we were grounded. Grounding, also known as Earthing, is walking barefooted while absorbing the magnetic field from Earth. As we walked, the free electrons from earth flowed from the ground through our feet and served as our bio-charger. 4,000+ years ago that magnetism was 250µT (microtesla) or 2.5 gauss (a measurement of magnetic flux). For example, an average refrigerator magnet is 20 gauss. All our cells were charged and remained at a normal operating voltage of approx. -20 to -25 mV. This charge kept cells healthy and prevented cell clumping so they moved freely in the circulatory system, communicated and carried O2 & nutrients to the 11 organ systems. This -20 to -25 mV translates to 7.35 pH and 7.44 pH (providing an alkaline vs. acidic body). Humans were healthy, vital, energized and alkaline.
Earth's magnetic field has declined over 80% in the last 4,000 years. It's now 0.5 gauss vs. 2.5 gauss historically. In other words, our human bio-charger and natural alkalizer is almost gone. When the body's pH drops below 7.26 we become sick and tired, and when it drops below 6.48 pH (an acidic body at +30 mV) cancer begins to thrive. Imagine your cell phone charger working at 20% of normal capacity and the battery no longer holding that charge. To make matters worse we now wear shoes, live in buildings disconnected from Earth, drive cars or ride in planes and trains. We are separated from the weak 20% that remains, and almost totally disconnected from the Grounding that helped create and sustains life.