What is Fascia and Why is it Important?

Have you ever wondered why we lose mobility as we age and what you can do to slow that process? 

One answer might lie in the fascia—the fibrous, body-wide network of connective tissue that surrounds, supports, and runs through muscles, bones, nerves, and organs. It is the most abundant and varied tissue in the body, yet until recently it has also been the most overlooked.

Despite centuries of studying human anatomy, researchers and medical practitioners have only in recent decades begun to recognize the role fascia plays in regulating bodily functions. Fascia acts as a whole-body communication system, guides forces throughout the body, and responds to and remodels itself as those forces change. Our connective tissue includes ligaments, tendons, cartilage, bone, fascia, organ wall support, and blood vessel walls. The fascial system connects every part of the body to every other part. 

In a healthy state, the fascial network stretches, extends, and contracts, moving freely. However, factors such as age, injury, repetitive stress, and poor postural habits can reduce fascia’s flexibility, making it tight and restricted. 

Research shows that changes in the fascia are closely linked to the loss of flexibility and mobility due to several key factors:

• Thickening and Stiffness: When fascia thickens or stiffens, it loses its ability to glide smoothly, limiting mobility. This stiffness can cause muscles to stick together, restrict movement, and eventually lead to pain and discomfort.

• Adhesions and Tightness: Fascial adhesions, strands of fascia that stick to each other or to muscles, can significantly limit range of motion. These adhesions often develop due to a lack of movement, repetitive strain, or trauma.

• Scar Tissue: These fascial adhesions, resulting from a sprain, a broken bone, or surgery, can restrict the flow of blood and lymph. The affected tissue is deprived of vital nutrients.

• Compensatory Patterns: Supple, balanced tissues distribute forces evenly, whereas stiff tissues create weak points. Tight or damaged fascia can trigger compensatory movement patterns, placing extra stress on muscles, joints, and ligaments. When some areas of your body are chronically tight, other areas must overcompensate. Over time, this can reduce flexibility and increase injury risk. Stress concentrations can cause both acute injuries and chronic degeneration.

  
  

Evidence suggests that flexibility — particularly when associated with well-hydrated fascial tissue — is a meaningful marker of biological age and systemic health. People with greater flexibility tend to be more physically active, maintain greater functional independence, and experience fewer falls and injuries. 

Fascia is increasingly viewed as an independent, regulatory body system, and its dysfunction is a major cause of pain and disability. Understanding fascia and its impact on movement is vital to health. A groundbreaking 2024 study in the Scandinavian Journal of Medicine & Science in Sports found that women with low flexibility had nearly five times the risk of premature death compared with those with high flexibility. For men, the risk was nearly doubled.

Beyond premature death, studies show that losing flexibility after age 50 raises your risk of fractures and can lead to a loss of independence. This is tied to reduced joint mobility. When joints are stiff, you’re more likely to fall. In fact, 87% of fractures in older adults result from falls. Losing flexibility directly affects your ability to perform simple daily tasks, such as getting dressed, reaching for objects, or getting in and out of a car. Research indicates that maintaining your flexibility lowers the risk of losing the ability to perform these essential activities.

The fascial system not only affects mobility but is also critical to understanding the body and what it takes to keep it functional and healthy throughout life. 

A 2024 review in Frontiers in Neurology characterized fascia as a “regulatory system” (richly embedded with blood vessels, lymphatic vessels, and neurotransmitter receptors) that actively monitors and responds to conditions throughout the body and sends signals that influence pain, inflammation, immune function, and the stress response.

The fascial system has about 250 million sensory receptors, making it the largest sensory organ. Restricted fascia activates nerve receptors connected to your autonomic nervous system (keeping them on high alert) and compresses the lymphatic vessels within it. This can impair your body’s ability to clear metabolic waste and mount an immune response. Because of its impact on the nervous system, practices that restore fascial mobility can help you shift out of stress mode. 

New insights into fascia are prompting us to move away from viewing the body as a machine made of separate parts. Instead, we’re beginning to see our body as a continuous system. We now understand that fascia plays a crucial role in enabling smooth movement by allowing muscles to glide against one another effectively.

Practicing yoga can help hydrate and remodel fascia. The most effective training for the fascia involves varied movements in multiple directions and under different loads. Yoga is especially effective for working with long fascial chains (myofascial sheaths) when you hold stretches for three to five minutes. At the start of a stretch, soft tissues benefit, but holding longer can begin to affect denser tissues, such as fascia. Join me for yin yoga on Fridays, either in person at Taspen's Healing Center in Conifer or via Zoom, at 9:30 a.m. Mountain Time, to work with your fascial system. Sign up here.

Many Yoga to Thrive sequences include myofascial release techniques that trigger a cycle of inflammation, repair, and remodeling of the fascia. The myofascial release techniques in Yoga to Thrive aim to enhance range of motion, restore myofascial glide, increase blood and lymphatic circulation, increase tissue hydration, minimize delayed-onset muscle soreness, and regulate the nervous system. Two more sessions remain in the current Yoga to Thrive series. You can sign up for one or both classes offered on November 10 and 17 at 5:00 p.m. Mountain Time using this registration form. 

Other forms of myofascial release include trigger point therapy, bodywork such as Rolfing and massage, acupuncture, scraping techniques, and percussive therapy devices such as the Theragun.

Fascia responds to the demands (or lack of demands) placed on it and can remodel over six to 24 months based on load. Working with the fascial system can help us maintain mobility and keep tissues hydrated so they glide more easily. Keep in mind that nutrition, sleep, and lifestyle also influence fascia. 

I'll be adding more YouTube Shorts with myofascial release techniques you can do at home over the coming weeks. Follow us @fireflycommunityllc to watch.