Open Book Stretch
- Equipment
- Body weight
- Körperregion
- Waist
- Typ
- Stretching
The Open Book Stretch is a side-lying thoracic rotation drill that targets the pectoralis major (clavicular and sternal heads), anterior deltoid, obliques, and rectus abdominis. By rotating the top arm back while keeping the hips stacked, it opens the chest and front shoulder and improves rotational mobility through the thoracic spine.
Open Book Stretch: So führst du sie aus
- 1Lie on your side on a mat with your hips and knees bent to roughly 90 degrees.
- 2Stack your knees directly on top of each other and keep them in contact throughout the movement.
- 3Extend both arms straight out in front of you at chest height with your palms pressed together.
- 4Inhale to prepare, keeping your lower arm flat on the mat and your knees stacked.
- 5Slowly rotate your top arm up and over toward the floor on the opposite side, following the hand with your eyes and head.
- 6Allow your upper back to rotate as far as comfortable, letting the back of your top hand approach or rest on the floor.
- 7Pause for one to two seconds at end range and feel the stretch across your chest, front shoulder, and the sides of your torso.
- 8Exhale and return your top arm back to the starting position, palms together.
- 9Complete all reps on one side before switching to the other.
Technik-Tipps
- Keep your knees stacked and pressed firmly together the entire time; if they separate, the stretch shifts from the thoracic spine and chest into the lower back.
- Move slowly and with control — this is a mobility drill, not a dynamic swing, so momentum works against you.
- Track your moving hand with your gaze; following your hand with your eyes helps drive rotation through the upper back rather than the lumbar spine.
- Exhale as your chest opens; breathing out during the rotation encourages a greater range of motion.
- Only rotate as far as your upper back allows and stop immediately if you feel strain in your lower back or neck.
Häufige Fehler
- Letting the knees separate or lift off the mat: this allows the hips to rotate and moves the stretch away from the chest and thoracic spine into the lower back, reducing the intended effect.
- Rushing through the rotation: moving too quickly turns the drill into a momentum exercise rather than a controlled stretch, limiting how deeply the pectorals, anterior deltoid, and obliques can release.
- Forcing the neck too far: the head should turn only as far as thoracic rotation naturally carries it; cranking the neck to follow the arm puts unnecessary stress on the cervical spine.
- Lifting the lower shoulder off the mat: reaching too far causes the base arm to peel up, destabilizing the position and reducing the effectiveness of the stretch.
- Compensating with the lower back: when the chest and thoracic spine are tight, the lumbar spine tends to rotate instead; consciously focus the movement on the upper back and reduce range of motion if you feel it in your lower back.
Häufig gestellte Fragen
What muscles does the Open Book Stretch target?
It primarily targets the pectoralis major (both the clavicular and sternal heads), the anterior deltoid, the obliques, and the rectus abdominis. The main training effect is a stretch across the chest and front shoulder as the thoracic spine rotates open.
How many reps should I do for the Open Book Stretch?
Most people benefit from 8 to 12 slow, controlled reps per side, holding a brief pause at end range. You can include it in a warm-up before upper-body training or as part of a standalone daily mobility routine.
Can I do the Open Book Stretch every day?
Yes. Because it is a low-load bodyweight stretch, you can perform it daily as part of a morning mobility routine or as a warm-up before training without meaningful recovery concerns.
Why do I feel the Open Book Stretch in my lower back instead of my chest?
This usually means your knees are separating or your hips are rotating open. Press your knees firmly together, keep them stacked on the mat, and consciously initiate the rotation from your upper back to redirect the stretch to the pectorals and obliques.
Is the Open Book Stretch suitable for beginners?
Yes. It requires no equipment and can be performed by most people regardless of training level. If you have limited thoracic mobility, reduce the range of motion initially and work progressively deeper as flexibility improves.
