SI joint pain is one of the most overlooked yet highly correlated causes of chronic lower back pain, often driven not by isolated injury, but by instability, asymmetry, and long-term muscle imbalance patterns in the pelvis and spine. In this episode, Dr. Ryan Peebles breaks down exactly what the SI joint is, why it becomes painful, and the most effective strategies to stabilize it, reduce flare-ups, and rebuild long-term resilience.
This episode explains why certain common stretches and positions can actually worsen SI joint pain, how daily habits contribute to instability, and what to do instead to restore balance. Dr. Ryan also covers the correct use of SI belts, sleep positioning, and the role of glute strength, hip flexor function, and core-driven movement in healing the root cause, not just managing symptoms.
This episode covers:
What SI joint pain is and how it differs from general lower back painWhy SI joint instability (not just inflammation) drives chronic pain The hidden danger of deep squats and “hanging on ligaments”How glute strength creates “force closure” and stabilizes the SI jointHow long-term muscle imbalance patterns keep you stuck in painSI belt best practices: when to use it, how to position it, and how to avoid dependencyThe best and worst sleeping positions for SI joint painReal student case studies: setbacks, nerve pain, and how to adjust safelyThe role of psychology vs physical structure in chronic back pain recoveryWatch the free Core Balance Masterclass and start your 7-day free trial to experience the Back Anchor lesson firsthand and begin retraining your movement patterns from the inside out: https://www.corebalancetraining.com/masterclass
All content is for educational purposes only. Consult a qualified healthcare professional before beginning any exercise or rehabilitation program.
Episode Chapters
00:00 — SI joint pain explained: why it’s a hidden cause of lower back pain
03:45 — Anatomy breakdown: where the SI joint is and how it becomes unstable
07:30 — Key symptoms: pain location, popping, and how to identify SI issues
11:10 — Why instability (not injury) drives SI joint pain
14:30 — Things to avoid: hip external rotation stretches (pigeon, butterfly, etc.)
18:40 — Deep squats
22:10 — Asymmetry habits: crossing legs, standing on one side, daily triggers
26:00 — The kneeling hip flexor stretch mistake (and how it causes SI pain)
34:10 — What to do: glute strengthening and proper hip flexor lengthening
38:20 — The bridge exercise: why form matters more than the exercise itself
42:30 — Advanced stabilization: banded bridge and building SI joint support
46:10 — SI belts: when to use them, how to position, and weaning off correctly
50:40 — Sleep positioning: best and worst positions for SI joint pain
55:20 — Student Q&A: nerve pain, setbacks, breathing, and long-term recovery approach