There is an interesting article in The Conversation explaining in detail why the habit of pulling your stomach in can harm you. Alexander teachers are always
Here's why it's DANGEROUS to suck your stomach in, doctors warn
Hourglass syndrome': The dangers of sucking in your stomach too much
How Too Much Exercise May Hurt Your Gut
Why it's bad to always suck your stomach in - ABC News
Alexander Technique Archives
Hilary King's Alexander Technique Blog
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Why It's Bad to Always Suck Your Stomach in : ScienceAlert
Hilary King's Alexander Technique Blog
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