The Microcosmic Orbit is a way of connecting the two major energy channels of your body. One channel goes up your spine and one channel down the front of your body in a loop.
The microcosmic orbit meditation goes through these channels point-by-point, opening up the different portals of energy around those two channels.
Eventually, you’re connecting the two channels into one circuit; blending the energy for balance throughout. Then, we’re not too hot in our upper organs, such as our head, lungs, and heart. Similarly, we are not too cold in our lower organs; the kidneys, bladder, and reproductive organs.
We will then have a nice, lukewarm energy flowing throughout the body.
-The Alchemist’s Tao Te Ching: Transforming Your Lead Into Gold https://www.amazon.com/dp/1718636970/ref=cm_sw_r_cp_api_i_3WpTCb8MSDFZ2