Science
Effect of different sitting postures on lung capacity, expiratory flow, and lumbar lordosis
Lin and colleagues measured the same people sitting in four postures and found that slumped sitting significantly decreased lung capacity and expiratory flow compared with normal and long-sitting postures. The slump doesn't just look collapsed — it mechanically restricts the breath in the same body, in the same chair, minutes apart.
The Look Up read
The posture-breath link in the book isn't a metaphor: fold the torso and the diaphragm loses room. Unfold, and the breath gets its space back.
The Look Up view
Same bodies, same chair, minutes apart — slumped sitting measurably cut lung capacity and expiratory flow. Posture isn't cosmetic; it's mechanical, and the breath proves it.
☀ Use it — Before a long sit, take one breath slumped, then one sitting tall. The difference you feel is the study — and the reason the Lift starts with posture.
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The book behind The Look
Look Up — The New Science of Vitality in the Age of AI
Every verdict on The Look traces back to one book — the research, the stories, and the 20-Second Lift. By Dr. Jason Deitch, Dr. Gilles A. LaMarche and Dr. Jeff Langmaid.
Chiropractors & influencers: the practice edition of The Look: This Week carries waiting-room case pricing and patient lines — subscribe free.