Upper crossed syndrome refers to a particular configuration of overlapping overactive and underactive muscle groups in the neck, chest, and shoulders. Typically, poor posture causes the syndrome, ...

Diaphragm spasms feel like twitches in the area between the chest and the abdomen. They can occur with or without pain. Possible causes include an injury, nerve irritation, or a rare condition known ...

You may be able to improve your postural muscles over time with a combination of yoga, stretching, and exercises to build your strength. Design by Pichamon Chamroenrak. Photographs by James Farrell.