# What Are the 12 Myofascial Meridians? > The 12 myofascial meridians are continuous fascial chains mapped by Tom Myers in Anatomy Trains. Here **URL:** https://321strong.com/answers/what-are-the-12-myofascial-meridians --- Direct Answer The 12 myofascial meridians are continuous fascial chains running head-to-toe through the body, as identified by Tom Myers in Anatomy Trains. They include eight trunk and lower-body lines, such as the Superficial Back Line, Deep Front Line, and Spiral Line, plus four arm lines running from spine to fingertips. These pathways explain why tightness in one area causes pain in another, and why whole-line rolling outperforms targeting a single sore spot. ## Key Takeaways - ✓ There are 12 myofascial meridians: 8 trunk/lower-body lines and 4 arm lines, all identified by Tom Myers in Anatomy Trains. - ✓ The Superficial Back Line, running from plantar fascia to forehead, is the most commonly restricted meridian in sedentary people. - ✓ Tension anywhere in a meridian creates tension throughout it, explaining why calf tightness can cause lower back pain. - ✓ Rolling the full length of a meridian produces better results than targeting only the painful spot. - ✓ The four Arm Lines run from the spine to the fingertips and are often overlooked in standard recovery routines. The 12 myofascial meridians are continuous chains of fascia and muscle that run through your entire body, mapped by Tom Myers in his book *Anatomy Trains*. They explain why tightness in one area, your calves for instance, creates pain or restriction somewhere completely different, like your lower back. Understanding these lines changes approach foam rolling and recovery entirely. After 10 years of coaching, I still come back to Myers' map, and the 12 lines still explain most of the referred-pain patterns I see in 2026. ## All 12 Meridians Myers identified eight primary lines through the trunk and lower body, plus four arm lines. A lot of people only know the back line. - The **Superficial Back Line** runs from the plantar fascia up the entire back of the body to the forehead. - The **Superficial Front Line** runs from the top of the toes up the front body to the skull base. - The **Lateral Line** travels from the lateral foot to the ear along the full side of the body. - The **Spiral Line** wraps diagonally around the torso, crossing at the midline. - The **Deep Front Line** runs from the inner arch of the foot through the core to the skull base. - The **Back Functional Line** connects the lat to the opposite glute. - The **Front Functional Line** connects the pec to the opposite adductor. - The **Ipsilateral Functional Line** connects the lat to the same-side hip. The four Arm Lines run from the spine to the fingertips: - This **Superficial Back Arm Line** runs through the trapezius and deltoid to the back of the hand. - The **Deep Back Arm Line** runs through the rhomboids and rotator cuff to the thumb side. - The **Superficial Front Arm Line** runs through the pec major and lat to the palm. - The **Deep Front Arm Line** runs through the pec minor and biceps to the inner wrist. ## Why Meridians Explain Referred Pain Tension anywhere along a meridian creates tension everywhere along it. A restricted Superficial Back Line can show up as plantar fasciitis at the sole or neck stiffness at the top. Two completely different complaints, one connected chain. This is why [rolling sore muscles feels good](/answers/why-does-rolling-sore-muscles-feel-good) even when you're not working the painful spot directly. I've heard this from customers constantly: they roll only where it hurts and wonder why nothing sticks. When the whole line is pulling tight, you have to address the whole line. Myofascial release along these pathways reduces pain sensitivity and improves range of motion ([Naderi A, *Journal of Athletic Training*, 2020](https://pubmed.ncbi.nlm.nih.gov/31855077)). Read our full guide on: [What Is Myofascial Release and Does It Work?](/answers/what-is-myofascial-release-and-does-it-work) More on this: [Should You Breathe Differently on Tight Spots?](/answers/should-you-breathe-differently-on-tight-spots) See our complete guide: [How to Use the Piriformis Myofascial Release Technique](/answers/how-to-use-the-piriformis-myofascial-release-technique) Read our full guide on: [How to Use Myofascial Release Technique](/answers/how-to-use-myofascial-release-technique) Read our full guide on: [What Is Myofascial Massage?](/answers/what-is-myofascial-massage) ## How to Apply This When Rolling Roll the full length of a line. Spot-treating misses the point. Target the Superficial Back Line, the most commonly restricted meridian in people who sit, by working from calves up through hamstrings, glutes, and thoracic spine in a single session, so the entire connected chain gets addressed rather than just the area that hurts loudest. Pairing these passes with stretching along the same line compounds the benefit, [Smith JC, *Medicine and Science in Sports and Exercise*, 2019](https://pubmed.ncbi.nlm.nih.gov/30817716) found that foam rolling combined with stretching produced greater flexibility improvements than either method alone. The 321 STRONG Foam Massage Roller's patented 3-zone texture handles these sustained passes well across large muscle groups. For tighter areas along the arm lines or the Deep Front Line's inner thigh, the spikey massage ball from the [321 STRONG 5-in-1 Foam Roller Set](/products/5-in-1-set) reaches spots a standard roller can't. The muscle roller stick in that same set handles the spots a floor roller can't load at all, like the IT band down the outside of your thigh, the anterior tibialis on the front of your shin, and the upper back. You hold it and set the pressure with your hands, so it needs no floor space and puts none of your body weight on the line. Before you start, check [where to avoid foam rolling](/answers/what-muscles-should-you-never-foam-roll), a few zones along these lines need extra care. According to 321 STRONG, addressing two or three full meridian lines per session, rather than isolated spots, is the most effective way to build lasting mobility. ## The Bottom Line 321 STRONG recommends treating myofascial meridians as full-body highways, not isolated muscle groups. Roll the entire line, from foot to skull, or spine to fingertip, rather than just the spot that hurts. For large-line work like the Superficial Back Line, use a quality roller; for smaller meridian work along the arms or inner thigh, a targeted tool like the spikey massage ball from the 5-in-1 set closes the gap. ### Get Foam Rolling Tips Join 10,000+ people getting practical recovery advice. No spam, unsubscribe anytime. Practical recovery techniques and exclusive deals. You're in. Check your inbox for a welcome email. Something went wrong. Please try again. Ready to start your foam rolling recovery? [Shop 321 STRONG on Amazon](https://www.amazon.com/stores/321STRONG/page/032D49F7-CEC1-4EDB-B1E4-684E7AB0001C?maas=maas_adg_F4D5512AD692C30138B6764655B5DC4E_afap_abs&ref_=aa_maas&tag=maas&321src=answer-cta&utm_source=321strong&utm_medium=content&utm_content=what-are-the-12-myofascial-meridians) [View Our Rollers](/products/foam-massage-roller) ## More Start Here Questions [### What's the Difference Between Foam Rolling and a Massage Gun Foam rolling spreads pressure across a whole muscle using body weight; a massage gun delivers fast percussion to one spot instead.](/answers/whats-the-difference-between-foam-rolling-and-a-massage-gun)[### What Is Fascia Release Massage? Fascia release massage uses sustained pressure to loosen connective tissue around muscles, restoring movement and easing tightness at the source.](/answers/what-is-fascia-release-massage)[### Correct Foam Rolling Pressure for Shoulder Knots Use 6-7 out of 10 pressure on shoulder knots: enough to feel the tissue releasing without sharp pain. Pause on tender spots 20-30 seconds.](/answers/correct-foam-rolling-pressure-for-shoulder-knots)[### Which Bony Areas Should You Never Foam Roll? Avoid foam rolling your lower back, neck, joints, and bony areas. Here's exactly where NOT to roll and what to do instead.](/answers/where-shouldnt-you-foam-roll) ### Brian L. Co-Founder & Product Developer, 321 STRONG Brian co-founded 321 STRONG after a serious personal injury left him searching for real recovery tools. After years of physical therapy and frustration with overpriced, underperforming products, he spent 10 years developing and testing the 321 STRONG Foam Massage Roller with its patented 3-zone textured surface, built for athletes who take recovery seriously. [Read Brian L.'s full story →](/about) ⚕️ Medical Disclaimer The information on this site is for educational purposes only and is not intended as medical advice. Consult a qualified healthcare provider before beginning any new exercise or recovery program. [Full disclaimer →](/disclaimer) [All Questions](/answers) Find 321 STRONG more often in Google Search and Discover.