Thoracic Rotation
Often called the open book, this drill restores rotation to a stiff upper back and stretches the obliques and chest. Rotating the top arm open while the knees stay stacked keeps the movement in the thoracic spine where you want it. It is a valuable mobility drill for lifters, golfers, and desk-bound shoulders.
- Equipment
- Body Weight
- Type
- Stretching
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- Abdominal External Oblique, Erector Spinae
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- Mobility Drill
- Target
- Abdominal External Oblique, Erector Spinae
- Secondary
- Deltoid Posterior, Pectoralis Major Sternocostal
How to do it
- 1
Lie on your side with knees bent and stacked, arms extended straight in front at shoulder height.
- 2
Keep the knees pinned together and resting on the floor throughout.
- 3
Exhale as you reach the top arm up and rotate it open toward the other side.
- 4
Follow your hand with your eyes and let your upper back rotate as far as it comfortably goes.
- 5
Hold the open position for a breath or two, then return; repeat, then switch sides.
Tips
- Keep the knees stacked and down so the rotation comes from the mid-back, not the low back.
- Move with your breath, exhaling as you open.
- Only rotate as far as the shoulder can follow without pain.
Variations
Common mistakes
- The top hand reaches for the floor behind you and the shoulder gets there by dropping back, so the arm travels further than the mid-back has actually turned.
- The head keeps facing forward while the chest rotates, leaving the neck twisted against the movement instead of following the hand around.
- The bottom shoulder is left rolled under the body, so the chest starts tipped and the rotation begins from a compromised position; set that shoulder blade flat first.
- Reps fire off one after another at speed, and range taken in a fast swing does not stay; open slowly and hold the end position for a breath or two.
- The arm gets treated as the measure of success, when the reach is finished the moment the ribs stop turning; watch the chest, not the hand.
Frequently asked
- How many reps of the thoracic rotation should a beginner do?
- Eight per side, two rounds, holding the open position for a breath or two each time. It is gentle enough for daily use and fits neatly into a warm-up before upper-body training or a rotational sport. Progress by holding the open position longer rather than by forcing the hand closer to the floor.
- How do I make the thoracic rotation easier or harder?
- For an easier version, rest the top knee on a cushion or foam roller so the hips stay settled and the movement asks for less range. To make it harder, hold the open position for five slow breaths and use the bottom hand to press the knees down, which removes the escape route through the hips and keeps the rotation in the mid-back.
- What is the thoracic rotation used for?
- It restores rotation to a stiff upper back and gives the obliques and chest a light stretch, which matters for lifters, golfers, throwers, and anyone whose shoulders have rounded from desk work. It is a poor drill when the shoulder is what stops you, because you feel the arm long before the spine, and it is deliberately not a low-back stretch; the knees stay pinned precisely to keep the movement out of there.
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