Formerly known 'The Rib Cage Smash", I have renamed this exercise to the Amazing Rib Cage Opener.

Who would have thought that by squishing down one side of the body, you can open up the opposite side?

Well, it kinda makes sense, doesn't it?

The key is long slow breaths that fill the lungs and push your sides out (remember your fishy gills).

Take your time on this.