The Language of Mindxbody: A Guide to Practice and Science
Pillar: Foundations
A guide to key concepts from practice and science
Mindxbody brings two kinds of language into conversation. One comes from traditions of practice: Chinese terms such as qi, dantian, sung, yi and jin, and their broad English translations, developed to guide attention and cultivate skill. The other comes from scientific investigation: terms such as interoception, proprioception, autonomic regulation and neuroplasticity, developed to describe and test aspects of bodily function. The Chinese terms used in practice often have no direct or clear equivalent in English, as the entries below will show.
The two approaches sometimes illuminate the same experience, but they are rarely direct translations. A traditional term may combine sensation, instruction, philosophy and cultivated skill. A scientific term usually names a narrower process or framework. This guide introduces each vocabulary on its own terms, then shows where comparison becomes useful—and where differences remain.
This section provides an orientation rather than a finalised dictionary. Meanings vary across lineages and disciplines, and the entries will develop together with the inquiry.
The language of practice
These terms are used within Chinese martial, health and philosophical traditions. Their value lies partly in what they help a practitioner understand, notice and do. Definitions therefore include both inherited meaning and practical use, without presenting traditional language as modern anatomy.
Baguazhang 八卦掌
Eight-trigram palm
Baguazhang is a Chinese martial tradition strongly associated with circle walking, turning and adaptive repositioning. Schools differ substantially in curriculum and interpretation.
Dantian 丹田
Cinnabar or elixir field; a cultivated centre
Dantian refers to fields or centres used in internal cultivation. Martial practice usually emphasises the lower dantian in the lower abdomen. It is better understood as a functional centre developed through breath, pressure, posture, attention and movement than as a precise anatomical point. Some practice traditions work with lower, middle and upper dantian, though different systems may interpret them in somewhat different ways.
Fa jin 發勁
Issuing trained force
Fa jin is the expression or release of jin into a task or point of contact. Methods differ across martial arts. Some use obvious compression and expansion; others make preparation increasingly difficult to see. The term does not imply a mysterious discharge, although it may look that way in more skilled practitioners. It directs attention to how force is organised, accelerated and delivered, minimising unnecessary tension.
Gong fu 功夫
Capability earned through sustained work
Gong fu is skill developed through time, disciplined effort and repeated correction. It may be the endeavour of a craftsperson, cook, surgeon or martial artist. The concept keeps Mindxbody's claims grounded. Human capability can change and be refined over time through practice and direction.
Jin 勁
Refined, trained force
Jin describes a force whose quality has been developed through coordination, timing, structure and sensitivity. It is often contrasted with li (力; lì), which is sometimes construed as crude strength, although this is not a clear translation. One distinction is that jin is a more refined force than ordinary or local force. In Wuzuquan, development of jin involves less wasted effort and more effective transmission through the whole body.
Jingluo 經絡
Channels and connecting pathways
Jingluo is the channel network of classical Chinese medicine, commonly translated as meridians or channels. It provides a functional map through which energy and bodily processes are understood and influenced. These channels are not anatomical vessels visible in dissection. Research may examine relationships with fascia, connective tissue, nerves or other networks, while recognising that these remain separate understandings.
Qi 氣
A traditional concept of vital activity and transformation
Qi has carried different meanings across Chinese philosophy, medicine and martial practice. It may refer to breath, vitality, functional activity or the quality of movement within a living system. In training, language about qi can organise breath, attention and bodily connection. Qi should not be treated as a hidden substance or translated into one scientific mechanism. Its usefulness and truth claims need to be considered in context.
San Zhan 三戰
Three battles; the foundational Wuzuquan form
San Zhan is a central form in Wuzuquan and related southern Chinese martial systems. In the Chee Kim Thong lineage, it is the start and end of the style. “Mind, body and spirit” is one lineage-based interpretive reading of the three battles, not the single literal definition of 三戰. The repetitive steps integrate stance, breath, attention, structure and force. Resistance and partner contact develop the qualities of Wuzuquan over time and under pressure.
Shaolin 少林
A monastic, cultural and martial lineage term
Shaolin refers first to Buddhist monastic institutions and their cultural histories. In martial contexts, it also appears in varied lineage accounts and style labels. Such accounts should be distinguished from independently documented history.
Sung 鬆
Released without collapse
Sung is an established English transliteration, while sōng is standard pinyin; both refer here to 鬆, not 松. Sung is the progressive release of surplus tension while structure, connection and readiness remain. Under pressure, the test is whether the body can adapt without unnecessary bracing. Changes in breathing, autonomic regulation and motor coordination may accompany sung, but no single scientific measure or concept fully defines the quality. ‘Relax’ is often used to convey the term in English, yet sung remains structurally sound, not weak or limp.
Taiji 太極
Supreme polarity; differentiation into yin and yang (陰陽; yīnyáng)
Taiji describes the emergence of distinction and complementary change from wuji. In practice, it directs attention to paired qualities such as movement and stillness, opening and closing, rising and sinking. Taijiquan takes its name from this principle. The relationship between wuji and taiji is not a simple sequence but an ongoing return between readiness and expression.
Taijiquan 太極拳
Martial art named for taiji
Taijiquan includes diverse styles that commonly cultivate coordinated whole-body movement, yielding, continuity and change. Its methods and histories vary, so the name should not be treated as evidence of one uniform practice.
Ting jin 聽勁 and dong jin 懂勁
Listening to force; understanding force
Ting jin is the trained ability to detect a partner's pressure, direction, balance and change through contact. Dong jin is the deeper capacity to understand what that information means and respond appropriately. Touch, proprioception, vision, prediction and learned pattern recognition may all contribute. Excess tension can reduce sensitivity, so reducing it contributes to the skill. Yet the skill is calibrated through practice, not found only through relaxed touch.
Wudang 武當
A place, cultural lineage and later martial classification
Wudang names a mountain complex and Daoist cultural centre, and is also used in later classifications of internal martial arts. Historical, religious and martial uses of the term should not be collapsed into one origin claim.
Wuji 無極
Without polarity; undifferentiated potential
In Chinese cosmology, wuji describes what precedes distinction and polarity. In practice, the term can point to a condition before committed action: balanced, available and not yet fixed on one response. Wujiquan takes its name from this principle. It is a philosophical and practical orientation, not a physiological state with a direct scientific equivalent.
Wuzuquan 五祖拳
Five Ancestors Fist
Wuzuquan is a Southern Shaolin martial art, historically associated with five grandmasters from different styles. white crane, monkey, luohan, emperor fist, and Damo, and brought together in one system with the finesse of the lady in the green dress. The roots of Wuzuquan are in centuries of practice and at its simplest combine: white crane hand techniques, the agile footwork of money, dynamic power and body techniques from luohan, posture and precision from Emperor fist, and meditation and development from Damo. However, each style brings a range of deeper assets, and it is not does not fit into the internal/external division. Articles exploring Wuzuquan will be forthcoming.
Xingyiquan 形意拳
Form–intention boxing
Xingyiquan is a Chinese martial tradition known for direct movement and the close organisation of intention, structure and force. The relation between form and intention is trained through specific methods rather than captured fully by the English translation.
Yi 意
Directed attention and intention in action
Yi is often translated as intention, but in practice it includes how attention, purpose and perception organise action. It is not muscular effort, and it is broader than inward sensing alone. Interoception, motor planning and attentional control offer useful lenses on aspects of yi; none is a complete translation. Slow practice makes yi easier to observe because small changes in attention become visible in breath, tension and movement.
The language of science
These terms belong to different scientific and clinical fields. Some describe established anatomy; others are measurements, broad capacities or theoretical frameworks.
Autonomic nervous system (ANS)
Regulation of organs and internal state
The ANS helps regulate heart rate, bodily responses, blood vessels, breathing, digestion, glands and other processes that do not depend on continuous conscious control. Its sympathetic and parasympathetic divisions are often introduced as ‘fight or flight’ and ‘rest and digest’, simple phrases used to convey more complex processes. Their patterns vary by organ and task, and both can contribute to adaptive action.
Enteric nervous system (ENS)
The intrinsic neural network of the gut
The ENS contains hundreds of millions of neurons within the gut and can coordinate many digestive functions locally. It communicates with the central nervous system through vagal and spinal pathways, as well as hormonal and immune signalling. Much of the body's serotonin is produced in the gut, where it has important local roles; peripheral serotonin does not directly enter the brain.
Fascia
Connective tissue that links and separates body structures
Fascia forms a body-wide connective-tissue system and is involved in force transmission, sliding between tissues and sensory signalling. It runs throughout the body, providing protection and wrapping for muscles and organs. Its properties affect movement and the ability to sustain load, while changes in fascial tissues can contribute to pain and stiffness. Research has increasingly recognised its importance, with various hypotheses about its wider significance still to be tested.
Heart-rate variability (HRV)
Variation in time between heartbeats
The heart does not beat at a constant rate, and changes occur during inhalation and exhalation. HRV measures variation in the time between heartbeats. Higher variability may be associated with better regulation, although with important caveats. Some components, under controlled conditions, reflect vagally mediated influence on the heart. Values are also affected by breathing, posture, age, fitness, medication, time of day and measurement method. HRV can be a useful measure of some aspects of health in particular contexts.
Interoception
Sensing and interpreting the body's internal condition
Interoception is the ability to sense and interpret signals from within the body concerning its physiological condition. These processes are distributed across peripheral pathways and brain networks. Interoception combines a range of abilities, including heartbeat perception, breath awareness, gut sensation and perceived tension. A distinction is made between awareness of signals and their accurate interpretation, which may be refined over time through practice and calibration.
Neuroplasticity
Experience-related change in nervous-system structure and function
Our understanding of the brain and how it ages has changed significantly in recent years. It is now recognised that the brain can change and learn throughout life, not only in younger years, through neuroplasticity. Repeated practice can alter neural processing, coordination and sensory discrimination. Change is task-specific and may be profound, but is not automatically beneficial: poor habits, pain and fear can be learned as well as unlearned.
Polyvagal Theory, neuroception and the vagal brake
An influential framework with contested physiological claims
Polyvagal Theory links autonomic patterns to safety, mobilisation, shutdown and social engagement. Its language—including neuroception and the vagal brake—has been influential in therapy and public discussion. The heart is rapidly regulated through vagal pathways, and below-conscious threat appraisal is real. However, major evolutionary, anatomical and physiological claims of the theory are disputed. Its terms may be used here when discussing the theory, but not as the default map of the nervous system or as proof of traditional concepts.
Predictive processing and active inference
Frameworks for perception and action
Predictive-processing accounts propose that the nervous system uses prior expectations and incoming signals to guide perception and action. Active-inference models extend this idea to action and regulation. These are influential theoretical frameworks rather than settled descriptions of all brain function. They can generate useful questions about skilled movement to be tested in practice.
Proprioception and exteroception
Position, movement and information from the environment
Proprioception is the awareness of body position, movement and force, drawing on receptors in muscles, tendons, joints and skin. Exteroception concerns signals from outside the body, including touch, vision and sound. Partner work in traditional practice integrates both: the practitioner senses their own organisation while reading pressure and movement from another person.
Resonance-frequency breathing
Slow breathing that amplifies cardiorespiratory oscillation
For many adults, breathing at roughly four-and-a-half to seven breaths per minute can strengthen interaction among breathing, heart rate and blood-pressure regulation. The optimal frequency differs between individuals. The resulting pattern is sometimes called cardiac coherence and may improve HRV. Slow breathing can be useful for vagal stimulation, though it is not necessarily equivalent to dantian breathing.
Somatosensory system
Touch and bodily sensation
The somatosensory system processes touch, pressure, vibration, temperature, pain and proprioception through distributed pathways. The brain's representations of the body can change with experience and use, a form of plasticity. Through this system, tactile sensitivity and contact skills can be improved through practice.
Sympathetic and parasympathetic activity
Mobilisation and regulation across changing demands
Sympathetic activity supports mobilisation, often described as ‘fight or flight’, including cardiovascular and metabolic changes. It plays a major role in a range of physiological processes without conscious engagement. Parasympathetic activity supports functions such as digestion and rapid cardiac regulation. Each has its own importance and value. Effective regulation means being able to mobilise when required, remain coordinated during demand and recover afterwards.
Vagus nerve
A major pathway between brainstem and body
The vagus is the longest cranial nerve, running from the brain through the neck and into the abdomen. It is a major parasympathetic pathway to the heart, lungs and digestive system. It carries more signals from the body to the brain than in the other direction. It is therefore important to brain-body communication, and it works alongside spinal, hormonal, immune and other pathways. Vagal activity can be influenced in several ways, including through breathing, allowing some aspects of bodily state to be consciously affected.
Window of tolerance
A clinical metaphor for a workable range of arousal
The window of tolerance describes a range within which a person can remain engaged and responsive without becoming overwhelmed or shutting down. It can be a helpful clinical and training metaphor. In martial practice, a related question is observable: to what degree do perception, breath and choice remain available under increasing pressure?
Where the vocabularies can meet
There is value in seeking to observe which features overlap, what might explain them and what remains outside the comparison.
Practice and science: useful lenses, necessary distinctions
Sung 鬆
Useful scientific lenses: Muscle activity, postural control, breathing and autonomic regulation under load
Keep distinct: While potentially connected to vagal tone, sung is also a trained whole-body quality.
Yi 意
Useful scientific lenses: Attention, interoception, motor planning and sensorimotor prediction
Keep distinct: Yi also carries traditional, relational and instructional meanings.
Lower dantian 下丹田
Useful scientific lenses: Breathing mechanics, intra-abdominal pressure, balance, body representation and gut-brain signalling
Keep distinct: Although located in the lower abdomen, it is a cultivated centre and is not equivalent to the ENS.
Jin 勁 / fa jin 發勁
Useful scientific lenses: Biomechanics, ground reaction force, sequencing, coordination and motor learning
Keep distinct: Developing refined force is not equivalent to reducing prediction error.
Ting jin 聽勁 / dong jin 懂勁
Useful scientific lenses: Touch, proprioception, exteroception, anticipation and decision under contact
Keep distinct: Requires objective measures in partner training, rather than subjective sensitivity alone.
Qi 氣
Useful scientific lenses: Breathing, vitality, regulation, movement quality and lived bodily experience
Keep distinct: No single scientific variable at present is a translation or measure of qi.
How Mindxbody uses these terms
The study begins with what can be observed in practice. A traditional term is used first in its own context: what instruction it gives, what experience it names and how a practitioner learns to recognise it. Scientific concepts are then used to sharpen questions, identify possible mechanisms and locate relevant evidence.
This guide will remain a living reference, and new terms will be added when they become necessary to understand the work. The aim is a shared language precise enough for inquiry and accessible enough for practice.
Sources and further reading
Traditional language and historical context:
Pregadio, F. (ed.) (2008). The Encyclopedia of Taoism. Routledge; see “Dantian.”
Kroll, P. W. (2015). A Student’s Dictionary of Classical and Medieval Chinese. Brill. ISBN 9789004283657.
Fu Zhongwen (2006 ed.). Mastering Yang Style Taijiquan, translated by Louis Swaim. Blue Snake Books.
Scientific reading:
Khalsa, S. S. et al. (2018). “Interoception and mental health: a roadmap.”
Prescott, S. L., & Liberles, S. D. (2022). “Internal senses of the vagus nerve.”
Grossman, P. et al. (2026). “International expert evaluation of the Polyvagal Theory.”
Furness, J. B. (2012). “The enteric nervous system and neurogastroenterology.”