Every term.
Plainly defined.

An adhesion is where fascial tissue has become stuck to adjacent tissue, limiting movement and creating a pull across the body. Think of it like plastic wrap that has folded over on itself. Once stuck, it transmits tension to areas far from the original site.

Why it matters: adhesions are often the root cause of pain that "moves around." The tightness in your shoulder might be pulling from an adhesion in your upper back.

The part of your nervous system that regulates automatic functions: heart rate, breathing, digestion, and the stress response. Fascia is densely innervated by autonomic nerve fibers, which is why emotional stress and trauma often show up as physical tension in the body.

Why it matters: releasing the fascia can directly influence the nervous system. Sustained pressure activates a parasympathetic (rest and digest) response, calming the whole system.

The primary structural protein in fascia and the most abundant protein in the human body. Collagen fibers give fascia its tensile strength. When fascia dehydrates or becomes restricted, collagen fibers mat together and lose their organized, sliding structure.

Why it matters: collagen is responsive to sustained mechanical pressure. This is the biological basis for myofascial release, pressure over time reorganizes the collagen matrix.

Pain lasting more than 3 months, often without a clear structural cause on imaging. The fascial system is increasingly recognized as a primary driver of chronic pain that doesn't show up on MRIs, because fascia is largely invisible to standard imaging.

Why it matters: if you've been told "nothing is structurally wrong" but you're still in pain, fascia is often the missing piece of the explanation.

The thickening and stiffening of fascial tissue, often in response to repetitive stress, injury, or prolonged poor posture. Densified fascia loses its ability to glide and becomes a source of stiffness, pain, and restricted movement.

Why it matters: densification is reversible. Sustained pressure, movement, and hydration can restore the normal texture and glide of fascial tissue over time.

The dense, organized layer of fascia that surrounds and separates muscles, tendons, and bones. Unlike superficial fascia (which lies just under the skin), deep fascia transmits mechanical forces across large distances. The thoracolumbar fascia, the deep fascia of the lower back, influences everything from hip movement to shoulder function.

A continuous, three-dimensional web of connective tissue that surrounds, supports, and connects every muscle, bone, organ, and nerve in the body. It is the organ that holds everything else in place. Fascia is made primarily of collagen and water, and it responds to mechanical pressure, movement, and hydration.

Why it matters: fascia was largely ignored by anatomists for decades. It's been called "the Cinderella tissue", everywhere, essential, overlooked. Understanding it changes how you understand pain, posture, and movement.

An area where fascia has lost its normal elasticity and glide, creating a fixed zone of tension that pulls on surrounding structures. A restriction in one area can create symptoms in a completely different part of the body, because fascia is one continuous system, not a collection of separate parts.

Why it matters: this is why treating where it hurts often doesn't solve the problem. The source of the restriction is frequently elsewhere.

The primary cell type in fascia. Fibroblasts produce collagen, elastin, and the ground substance that forms the fascial matrix. They also respond to mechanical forces, sustained pressure signals fibroblasts to remodel the tissue, which is the cellular mechanism behind fascial release.

A molecule found in fascial tissue that binds water and allows layers of fascia to glide smoothly over one another. When fascia becomes dehydrated or overloaded, hyaluronic acid can become viscous and sticky, causing layers that should slide to lock together.

Why it matters: hydration and movement are not optional for fascial health, they're the mechanism by which hyaluronic acid maintains its lubricating function.

The combined unit of muscle (myo) and its surrounding fascial sheath. You cannot fully separate muscle from fascia, they function as one integrated system. When we talk about myofascial release, we're working on both simultaneously.

A manual or self-applied technique that uses sustained, low-load pressure to release fascial restrictions. The key word is sustained: fascia responds to pressure held for 90 seconds or more, not to rapid friction or stretching. The tissue literally softens and reorganizes under prolonged, gentle force.

Why it matters: this is the foundation of everything we teach at Fascia.com. Understanding the 90-second rule changes how you use every tool and approach every release.

Sensory receptors embedded in fascial tissue that respond to mechanical stimuli, pressure, stretch, vibration. Fascia contains more mechanoreceptors than muscle, making it one of the richest sensory organs in the body. This is why bodywork has such a powerful effect on the nervous system.

The body's signaling network, divided into the central nervous system (brain and spinal cord) and the peripheral nervous system. Fascia is densely innervated and in constant communication with the nervous system, reporting pressure, stretch, pain, and position in real time. The autonomic branch regulates the stress response, directly influencing fascial tone through myofibroblast activity.

Why it matters: you cannot release fascia in a body that is neurologically braced. The nervous system must shift from sympathetic (fight or flight) to parasympathetic (rest and digest) for fascial tissue to soften and respond. This is why breath is not optional in self-bodywork -- it is the mechanism that makes the nervous system safe enough to let go.

The electrical charge produced by collagen fibers when they are compressed or stretched. Piezoelectric signals from fascial compression appear to trigger cellular repair processes, one proposed mechanism for why sustained pressure to the tissue facilitates healing and reorganization.

The body's ability to sense its own position and movement in space. Fascia is a primary organ of proprioception, it tells your brain where your body is at all times. When fascia becomes restricted or thickened, proprioceptive signals become inaccurate, contributing to poor coordination and chronic muscle guarding.

The position and alignment of the body in space. Posture is not held by muscles alone -- it is organized by the fascial system. The continuous tensegrity network of fascia distributes load, maintains upright alignment, and shapes how the body moves through space. Chronic fascial restriction creates the postural patterns most people experience as "bad posture."

Why it matters: most postural dysfunction is a fascial problem, not a muscular one. Strengthening muscles without addressing the fascial restrictions underneath produces limited, temporary change. Releasing the fascial restrictions that are pulling the body out of alignment is how posture actually changes -- and stays changed.

A system of hands-on soft tissue manipulation and movement education developed by Dr. Ida Rolf in the mid-20th century. Rolfing was one of the first structured approaches to working directly with fascia. Ida Rolf's core insight, that the body functions best when its segments are properly aligned within the field of gravity, remains foundational to modern fascial work.

An original self-directed methodology developed by Marco Guizar at Fascia.com after 16 years of hands-on fascial practice. Self-Bodywork™ is the intentional, educated application of sustained pressure to your own fascial tissue, using breath, time, and the right tools to release restriction, restore hydration, and reorganize the connective tissue system from the inside out. It is not foam rolling, not massage, not stretching, and not an extension of any existing system. It is its own complete methodology.

Why it matters: every other approach to fascial work requires a practitioner in the room. Self-Bodywork™ is built on the insight that fascia requires time and daily consistency that no appointment schedule can provide. You are the only person who can give your tissue what it actually needs. 15 minutes daily produces more lasting structural change than monthly practitioner sessions. The practice puts the work, and the understanding, entirely in your hands.

Relating to the body as distinct from the mind, though in practice, the two are inseparable. Somatic approaches recognize that the body stores and expresses psychological experience as physical tension, posture, and movement patterns. Fascia is a primary medium for this storage.

Why it matters: this is why stress, trauma, and emotion show up in the body, and why working with the body can resolve what the mind cannot reach alone.

The loose connective tissue layer that lies just beneath the skin, above the deep fascia. It contains fat cells, blood vessels, lymphatics, and nerve endings. The superficial fascia is the layer most directly affected by hydration, temperature, and skin rolling techniques.

A system of manual therapy developed by Dr. Ida Rolf that works with the fascial network to restore vertical alignment and ease of movement. Structural Integration addresses the whole body as a tensegrity system, working through the fascial layers in a systematic sequence to reorganize the body's relationship with gravity.

Why it matters: Structural Integration is one of the primary intellectual ancestors of Self-Bodywork. Dr. Rolf proved that fascia can be changed through educated, sustained manual pressure. The Self-Bodywork methodology puts that same principle in your own hands, for daily use at home.

A structural principle in which rigid components (like bones) float within a continuous network of tension (like fascia). In a tensegrity structure, no single component bears all the load, forces are distributed throughout the whole system simultaneously. The human body is a biological tensegrity structure.

Why it matters: tensegrity explains why a restriction anywhere in the fascial network affects the whole body, and why treating isolated symptoms rarely resolves systemic pain.

In fascial science, tension refers to the pulling force transmitted through the continuous fascial web. Fascia operates under constant tension. When one part of the fascial system becomes restricted, the tension it generates travels along fascial lines to create symptoms in areas that may seem completely unrelated to the original restriction.

Why it matters: understanding tension as a systemic, traveling force is the key to understanding why your pain moves, why treating the site of pain often fails, and why self-bodywork works on the whole body rather than isolated spots. Tension doesn't stay where it starts.

The property of certain gels to become more fluid when subjected to sustained mechanical stress, and to return to a gel state when the stress is removed. Fascial ground substance is thixotropic. This is the physical basis for why sustained pressure (not rapid friction) releases fascial tissue: the gel state of the matrix temporarily liquefies under slow, sustained load.

Why it matters: this explains the 90-second rule. You have to hold long enough for thixotropy to occur. Quick pressure doesn't work because the tissue doesn't have time to liquefy and reorganize.

A hyperirritable spot within a taut band of muscle or fascial tissue that produces local and referred pain when compressed. Trigger points often refer pain to predictable, distant locations, a trigger point in the gluteus minimus, for example, can produce pain down the entire leg that mimics sciatica.