Thoracic Spine & Core

Running reinforces a forward-leaning, flexed upper body posture — arms swinging forward, head tilted down, breathing in a narrow rib cage. Over time, the upper back stiffens and loses the rotation and extension it needs. This directly impacts breathing capacity, arm swing efficiency, and posture in the late miles.

Quadruped Thoracic Rotations

On hands and knees, one hand behind your head, you rotate your upper body to open toward the ceiling. The hands-and-knees position keeps your lower back still, which means all the rotation happens in your upper back — exactly where runners need it. Most people are surprised how little upper back rotation they actually have once the lower back can't compensate.

Equipment: bodyweight | Type: dynamic | Position: quadruped | Duration: 45s

Regions: Primary: upper_posterior · Secondary: core

Coaching Cues

• Start on hands and knees. Place one hand behind your head with the elbow pointing out to the side.
• Slowly rotate your upper body to open toward the ceiling, leading with the elbow. Follow your elbow with your eyes.
• Rotate as far as you can while keeping your hips and lower back completely still. Only your upper back should move.
• Return to the starting position with control, then repeat.
• Breathe out as you rotate up. Breathe in as you return.
• Complete the duration on one side, then switch hands and rotate to the other side.

Common Mistakes

• Rotating from the lower back instead of the upper back. If your hips are shifting or your lower back is twisting, you're cheating. Keep everything below the ribcage still.
• Moving too fast. Slow rotations let you feel where the stiffness is and work through it. Fast rotations skip right past it.
• Not reaching your full available range. Each rep, try to rotate a little further toward the ceiling. Gentle pressure at end-range is where the adaptation happens.
• Shifting your weight to one side. Stay centered over your hands — rotate, don't lean.

Seated Spinal Twist

Sitting on the floor, you rotate your upper body to one side and hold the position. The sustained hold gives the stiff tissues in your upper back time to release — something quick rotations can't accomplish. This targets the chronic upper back stiffness that builds up from desk sitting and running's forward-lean posture.

Equipment: bodyweight | Type: static | Position: seated | Duration: 45s

Regions: Primary: upper_posterior

Coaching Cues

• Sit on the floor with your legs crossed or extended in front of you. Sit up tall — don't slouch.
• Rotate your upper body to one side. You can reach the opposite hand to the outside of your knee to assist the rotation.
• Once you've rotated as far as comfortable, hold there. Don't force it — just maintain the position.
• Breathe slowly and deeply. With each exhale, see if you can rotate just a tiny bit further as the muscles relax.
• Stay tall through your spine. The rotation should come from your upper back, not from slouching or collapsing.
• Hold for the full duration, then slowly unwind and repeat on the other side.

Common Mistakes

• Rounding your back to get more rotation. Sit tall first, then rotate. Slouching feels like rotation but it's not — it's just collapsing.
• Rotating from the hips instead of the upper back. Your pelvis should stay facing forward. If your hips are turning, you're not getting upper back rotation.
• Not holding long enough. The sustained hold is what drives the tissue change. Brief rotations don't provide enough time for the stiff tissues to release.
• Holding your breath. Breathing is critical — each exhale allows a small increase in rotation.

Dead Bug with Reach

Lying on your back, you extend opposite arm and leg away from your body while keeping your lower back pressed flat against the floor. The reaching component adds a stretch to the exercise — you're building core stability and thoracic mobility at the same time. This mimics what your body does during running, where opposite arms and legs move while your trunk stays stable.

Equipment: bodyweight | Type: active | Position: floor | Duration: 30s

Regions: Primary: core

Coaching Cues

• Lie on your back with your arms pointing toward the ceiling and your knees bent at 90 degrees (feet off the floor).
• Press your lower back firmly into the floor. This is the foundation — maintain it throughout.
• Slowly extend one arm overhead and the opposite leg away from you at the same time. Reach LONG with both limbs.
• If your lower back starts to lift off the floor, you've gone too far. Reduce the range.
• Return to the starting position and switch to the other arm and leg.
• Breathe out as you extend. The exhale helps keep your lower back flat.

Common Mistakes

• Lower back arching off the floor. This is the number one mistake and means the exercise isn't working. If your back lifts, don't extend as far. The range where your back stays flat is the only range that counts.
• Moving too fast. Slow, deliberate extensions give your core time to stabilize. Rushing turns this into a flailing exercise instead of a controlled one.
• Not reaching far enough. The long reach is what adds the mobility component. Extend as far as you can while keeping the back flat.
• Holding your breath. Exhale as you extend — it helps maintain core tension and back position.

Side-Lying Windmills

Lying on your side with knees stacked, you slowly open your top arm toward the ceiling and behind you, like opening a book. This stretches the chest and rotates the upper back in a relaxed, supported position where gravity does most of the work. A gentle way to counteract the rounded-shoulder posture that running reinforces — especially pleasant after a long run.

Equipment: bodyweight | Type: dynamic | Position: floor | Duration: 45s

Regions: Primary: upper_posterior · Secondary: core

Coaching Cues

• Lie on your side with your knees bent to about 90 degrees, stacked on top of each other.
• Extend both arms in front of you, palms together.
• Slowly lift your top arm up toward the ceiling and then behind you, like you're opening a book. Follow your hand with your eyes.
• Let gravity help — as your arm reaches behind you, the weight of the arm provides a gentle chest stretch and upper back rotation.
• Keep your knees stacked and pressed together the entire time. Only the upper body rotates.
• Return the arm to the starting position and repeat. Then switch sides.

Common Mistakes

• Letting the knees come apart. If your knees separate, you're rotating from your lower back instead of your upper back. Keep them pressed together.
• Not opening far enough. Let the arm travel all the way behind you toward the floor. The stretch should be felt across the chest and through the upper back.
• Moving too fast. This should feel relaxing, not rushed. Let gravity do the work and breathe into each rotation.
• Not following with your eyes. Looking where your hand goes helps your nervous system allow more rotation. Staring at the floor limits the movement.

Cat-Cow

On hands and knees, you alternate between arching your back (cow) and rounding it (cat) in time with your breathing. The gentlest and most familiar spinal mobility exercise. Each cycle moves your entire spine through flexion and extension. A perfect warm-up for more demanding mobility work, or a standalone exercise when you want something simple and soothing.

Equipment: bodyweight | Type: dynamic | Position: quadruped | Duration: 30s

Regions: Primary: upper_posterior · Secondary: core

Coaching Cues

• Start on hands and knees with your wrists under your shoulders and knees under your hips.
• COW — breathe in and gently drop your belly toward the floor, lifting your chest and tailbone. Your back will arch.
• CAT — breathe out and round your spine toward the ceiling, tucking your chin and tailbone. Think of a Halloween cat.
• Flow back and forth between these two positions, matching each transition to your breath. Each transition should take 2-3 seconds.
• Try to move through your entire spine — not just the lower back. Feel the motion ripple from your tailbone through your mid-back to your neck.
• Keep it gentle and rhythmic. This should feel good, not forced.

Common Mistakes

• Only moving at the lower back. Try to feel the motion travel through your entire spine — upper back and neck included. Think of a wave moving through the spine.
• Moving too fast or not matching breath. The breath leads the movement. Inhale into cow, exhale into cat. If you're moving faster than you're breathing, slow down.
• Forcing the extension (cow) too aggressively. A gentle arch is all you need. Jamming into maximum extension can strain the lower back.
• Not breathing. This entire exercise is built on breath. If you're holding your breath, you're missing the primary benefit.