By A Mystery Man Writer
When you hear your sternum “popping,” you’re hearing the sternocostal and costochondral joints “click” or “pop.”
I'm experiencing pain in what it feels like my breast bone (upper middle chest) every time I'm lying down on my side or exercising. Is this normal? - Quora
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Costochondritis & Chest Wall Pain
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Chest and Rib Pain and Psoriatic Arthritis
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