The Kidney meridian, as all channels, runs on both sides of the body, and is not just on the surface but runs many pathways within/throughout the physical body.
When the Kidney energy runs smoothly, breathing in easily is assured.
If not so strong you may have issues in:
Why not make sure the lines of energy at least are happy?
Move your body and it will look after you is the key message I hope that you have learned in this short run through some of the body’s energy lines.