Breathing
Breathing Exercises for Pectus Excavatum: Rib Expansion and Control
Breathing exercises for pectus that expand the ribcage, support posture and calm the nervous system. Simple, daily and safe.

A pectus chest can train the body into shallow, upper-chest breathing. Reclaiming a deeper, three-dimensional breath with simple breathing exercises for pectus supports posture, training and calm.
Diaphragmatic breathing
- Lie on your back with knees bent. One hand on the chest, one on the belly.
- Inhale through the nose for 4 seconds, letting the belly rise first.
- Exhale through the nose for 6 seconds, letting the belly fall.
- Repeat for 5 minutes daily.
Lateral rib expansion
- Sit tall and wrap a long band lightly around the lower ribs.
- Inhale and try to push the band outward on all sides — front, back and ribs.
- Exhale slowly. 3 sets of 8 slow breaths.
This drill may improve rib mobility and the sense of space inside the chest. It should never feel sharp or painful.
Box breathing for calm
Inhale 4 — hold 4 — exhale 4 — hold 4. Repeat for 2 to 3 minutes before training or sleep to settle the nervous system.
Medical disclaimer. PectusFit content is educational and does not replace medical advice. Training may support posture and muscle development, but it does not fix, cure or reverse pectus excavatum. If you experience cardiac, breathing or structural symptoms, consult a qualified healthcare professional.
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