Meridians are channels that direct the flow of energy through specific pathways of the body. Think of it like a superhighway the energy in your body uses to move about your organ systems. Picture a body divided in half from top to bottom. Each side of the body is traversed by six meridians: three yin and three yang. Here are the 12 major meridians of the body and the function they perform.
Each meridian is assigned to what could be called a circuit, called an element. There are five elements:
Fire: Heart and small intestine meridian, circulation and three-fold warming meridian.
Earth: Stomach and spleen meridian.
Metal: Lung and colon meridian.
Water: Kidney and bladder meridian.
Wood: Liver and gallbladder meridian.
Lung (Arm Tai Yin, Metal Element): Regulates respiration and the intake of energy.
Large Intestine (Arm Yang Ming, Metal Element): Extracts and processes water from waste material before expelling it from the body.
Stomach (Leg Yang Ming, Earth Element): Digests and extracts energy from food and then distributes that energy through to the spleen and intestines.
Spleen (Leg Tai Yin, Earth Element): Distributes nutrients throughout the body, maintains muscle tone and regulates blood flow.
Heart (Arm Shao Yin, Fire Element): Circulates blood to all the organs in the body.
Small Intestine (Arm Tai Yang, Fire Element): Distributes nutrients throughout the body.
Bladder (Leg Tai Yang, Water Element): Removes liquid waste from the body.
Kidney (Leg Shao Yin, Water Element): Stores sexual energy, regulates the reproductive system, and produces blood and bone marrow.
Pericardium (Arm Jue Yin, Fire Element): The pericardium is an important part of the body and is the area that surrounds the heart, protecting it and removing excess energy. This meridian channel disperses energy throughout the body, thus preventing the heart from receiving too much energy.
Triple Warmer (Arm Shao Yang, Fire Element): Also called San Jiao controls the body and is not just responsible for a particular organ system. It helps to control metabolism and regulates heat, moisture, and body temperature.
Gallbladder (Leg Shao Yang, Wood Element): Stores and expels bile produced by the liver.
Liver (Leg Jue Yin, Wood Element): Circulates energy, regulates menstruation and the female reproductive system. It also maintains flexibility of the tendons and ligaments.
Like a network of rivers nourishing a landscape, the meridians are the channels through which qi (chi) flows, to nourish and energize the human body. These channels exist within the subtle body. Though they may have a correspondence to the physical nervous system, you won’t find the meridians per se on an operating table! Collectively, the meridians form the matrix within which the physical body functions.
Trauma, whether stemming from physical, emotional, or psychological experiences, can profoundly impact our well-being and disrupt the flow of energy within our bodies. The effects of trauma often reside in the nervous system, leaving imprints that can manifest as physical symptoms, emotional distress, or cognitive challenges.
Regulating the Nervous System: Traumatic experiences can disrupt the autonomic nervous system, leading to imbalances between the sympathetic (fight-or-flight) and parasympathetic (rest-and-digest) branches.
The ida energy is a more feminine energy, being nurturing and cooling. This energy is connected to the left nostril, and is associated with the moon and the color white. On the other hand, the pingala energy is masculine, associated with the sun, the right nostril, and the color red. Pingala is considered masculine as it is associated with more logical and analytical aspects of our personality, while the more feminine energy of ida is concerned with emotions and feelings. The idea of a chakra comes from the points on the spine where these dualing energies cross over each other, creating a wheel of spinning energy.
One of the most effective ways to harmonize the subtle energies is through a pranayama technique called nadi shodhana, or alternate nostril breathing. This technique not only helps to balance the energies, but to let the practitioner begin to feel a side that seems more dominant. If the more energetic pingala seems to be more dominant, the yogi can focus on more restorative poses, activating the ida energy, and vice versa.
Sushumna is the main energy channel and passes through the center of our spine out through the crown of the head. It represents perfect balance, harmony and union between the various energies in our body – masculine and feminine, sun and moon. When opened or awakened, this energy channel allows for a connection to our greater self or higher consciousness. In yoga, the Nadis are used to cultivate prana or our lifeforce. If the Nadis are blocked (like having a stuffy nose) our energy levels will be low. Much of yoga practice aims to balance our sun and moon energy (Ha = Sun, Tha = Moon = Hatha Yoga