Board Thread:Episode Discussion/@comment-34633327-20180105193053/@comment-25396609-20180109004440

Ahem, from Lighting the Fire:

Ren: Your body isn’t used to this kind of training, not to mention generating a defensive Aura on your own. It takes intense concentration at first, but in time it will become second nature, allowing you to deflect attacks and gradually heal your wounds. After  that, you can begin focusing on your Semblance, whatever that may be.