A quick note before you read any further: I'm not a doctor or a physical therapist. I'm someone who's dealt with a lot of back pain, which makes me an expert in having it, not necessarily in fixing it. Talk to your doctor or physical therapist before trying any of this, especially if something feels acutely wrong rather than just tight.
Quick Answers
- The thoracic spine, the section running through your rib cage, is the least mobile part of your spine by design. It's meant to be relatively stiff and stable, not loose.
- When it doesn't move well, your lumbar spine often picks up the slack, which can show up as lower back pain that isn't actually a lower back problem.
- For rotational sports like golf and pickleball, a locked-up thoracic spine effectively shuts down your ability to rotate through the swing or stroke.
- The L1 is designed for the lower back, but can be worn higher on the mid-back, similar to how you'd wear a heart rate monitor, to add heat before and during mobility work.
- Three movements, done in order, thoracic extension, cat-cow, and seated rotation, are what helped unlock this specific injury.
What Happened
About two and a half weeks ago, I threw the middle of my back out. Shooting a basketball, of all things. No weight, no load, just an ordinary movement, and my mid-back completely seized. I couldn't rotate. I couldn't sit comfortably. Breathing was genuinely uncomfortable.
Why the Thoracic Spine Locks Up Like This
Quick anatomy refresher. Your spine has three sections: cervical at the top, thoracic in the middle, lumbar at the bottom. The cervical spine is the most mobile, since it has to carry and move your head. The lumbar spine gets the most attention because it's the most talked-about source of back pain. The thoracic spine is the least mobile of the three, and also the least talked about.
That's by design, not a flaw. Your thoracic spine is built to be relatively stiff and stable to protect the organs behind your rib cage. The problem shows up when movement happens in an area that isn't built to move much, that's when it seizes.
There's a second-order effect worth knowing. If your thoracic spine isn't moving at all, your lumbar spine has to compensate, which can drive more lower back pain. And if you play a rotational sport, golf, pickleball, anything that needs trunk rotation, a locked-up mid-back effectively takes that movement off the table until it resolves.
Heat First: Where the L1 Fit In
The first thing I did was start using the L1 in 15 to 20 minute bursts. It's designed for the lower back, but you can wear it higher, on the mid-back, similar to how you'd wear a heart rate monitor.
The heat loosened the tissue almost immediately, and it was noticeably elastic: warm it up, and it felt better. Let it cool down, and it tightened back up. That's the reason consistent use mattered more than any single session.
Worth being honest about the visual here too: early on, doing cat-cow while the injury was still acute, the mid-back area looked visibly inflamed and tense. That's a useful before-and-after to have in mind, since it shows how much movement and heat can change the picture, not just how it feels but how the tissue actually looks.
The Three Movements
These are the three that helped unlock everything. Do them in order, ideally after you've warmed the area with heat.
1. Thoracic Extension
Get on all fours or your knees, then walk your hands back until your shoulders and hips are in line and your chest is close to parallel with the floor. Rest your elbows on a chair. Lean into the stretch, letting your mid-back take the weight rather than your arms or shoulders. Breathe in through your nose, out through your mouth.
Hold for 30 to 45 seconds. Do 2 to 3 rounds.
2. Cat-Cow
Get on all fours. Inhale through your nose as you lift your head and chest, looking up and forward (cow). Exhale through your mouth as you round your spine, pulling your belly button toward your spine (cat).
Do 3 sets of 10, slow and controlled. The first few reps may feel tight, that's normal. It tends to loosen as you go.
3. Seated Thoracic Rotation
Sit in a chair with your hands on your shoulders. Optionally, put something between your knees for stability. Rotate as far left and right as you can, keeping your hips and knees still and rotating through your chest, not your lower body. You can open your arms and use the chair for added leverage.
Do 3 sets of 10 on each side, slow and controlled.
How to Use This
If you've thrown your back out or you're feeling especially restricted, do these three movements first, before your normal warm-up, or the Infraway Flow video if you haven't seen it. Think of it as the warm-up before the warm-up, not a replacement for your regular routine, just something to add when things are locked up.
Watch the Full Video
Want More Like This?
We're building out golf and pickleball warm-up content in the same family next. Join the list to get it as it's released. For more on how heat and mobility work together, see the L1 FAQ.
Have a question about this one, or want something more specific to your situation? Use the contact form or reply to any of our emails if you're already on the list. It goes to a real person.
