An uneven rib cage means the sides of the rib cage are not symmetrical. There are several causes of uneven ribs, including scoliosis and Poland syndrome. Alternatively, a person born with an ...

But over time, mobility experts realized this stretch was making the shoulder ... engaging your core as your ribs move inward and your entire rib cage moves down toward your waist.

Pregnancy stretches just about every part of your body to the max — including, for some moms-to-be, the rib cage. The result ... when their body starts to stretch in earnest.