左侧背部疼痛，深呼吸时疼痛加剧，躺下最疼！

your Pect Minor muscles( group of three) are in spasm= =shortened up.
the Pect Minor muscles attach to rib 3,4, and 5 below the shoulder..
when they are in spasm, they pull the ribs up, since the rib from front to back is only one piece,
the rib head on back twists backwards, that how caused the pain.
good posture=== like military person in attention=== squared the shoulders will help a lot.
you can self-treat: extend your left arm backwards and with your right hand push==an<4> or ya<1> the area below your left shoulder, push down and pull down will soften Pect Minor and stop pain.
or find Twei=na expert help you.

0 0 哎哟,我的妈呀。我老妈也是这样的。

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