In the first three lessons, I discussed how we align our physical bodies with the forces of Heaven and Earth. This lesson is about learning the difference between the two main aspects of our Qi using the concept of Yin and Yang.
Realize that there are two major forces acting upon us at all times, the first and most obvious is the force of gravity, we all understand what that is. There is however another, balancing force in play as well, that of centrifugal force. As the earth spins at about 6000 miles per hour trying to throw us off it, we are at the same time held fast by gravity. (Physicists would disagree, but I’m just illustrating a point) In another way of viewing it (the Taoist way), we are suspended between the two forces of Heaven and Earth.
Think of “Earth” as the pull of gravity, pulling directly towards the center of the planet. Know it is Yin and, elemental, sinking and compressing downward, everything heavier than air flows towards it. The only way we know which way is up is because we know which way is down!
Think of “Heaven” as that centrifugal force that is lifting us directly away from the center of the Earth; in Qigong parlance, “the golden thread from Heaven” this force is Yang, and ethereal. Lifting and expanding upwards, everything lighter than air, including electrical energy floats weightlessly.
Beginners on the way of Qigong first learn to feel and understand these two different aspects of energy, adepts move beyond the understanding of discerning yin and yang to get to a point where they harmonize yin/yang.
To better learn how to feel Yin and Yang, consider two main types of qi, Yeng qi and Wei qi. Yeng qi is all that stuff that sinks down through our bodies as we relax and let it sink, things like blood, lymph, muscles, organs, a thick viscous downward flow of all our soft tissue.
Think of Wei qi as all that stuff that floats like our electrical signals our nervous system releasing neutral density neurotransmitters into our system like endorphins… our emptied muscles and bones and our breath.
After you understand this concept, you are ready to apply the knowledge to Qigong exercise.
When you relax your body, the blood and lymph and all the soft tissues sink lower into your body; this is the Yeng qi sinking. As this material sinks down, the blood filters through the lymph nodes, and the fascia tissues relax and a curious event occurs. The Wei qi is displaced and it rises up giving you a buoyant feeling. The more you can sink and relax downward, the more you can expand and feel buoyant going upwards.
You are learning to flow all the Earth (Yin) elements (Yeng qi) downward causing the complimentary effect of all the heavenly (Yang) elements (Wei qi) to rise and expand. These dynamics act like an energy pump, sinking down stimulating a return to an upright posture, you are learning to discern Yin and Yang: a major milestone on the qigong path.
More Here: Qigong Lesson #5