Why is maintaining an upright posture so uncomfortable if this is the posture we are meant to have? - Quora

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I always have a correct posture, sitting and standing properly, and yet my back hurts (bottom of the spine). Why is that? - Quora

Stress position - Wikipedia

How important is posture? - Quora

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Human upright posture control models based on multisensory inputs

How important is posture? - Quora

The Abortion I Didn't Have - The New York Times

My posture when sitting down and standing is very weird how can I fix it (picture in comment)? - Quora