Board Thread:Episode Discussion/@comment-14138255-20170122163519/@comment-25936766-20170127013301

I think it's like this: When charged, her muscles get stronger and her Aura gains some electricity as a visual cue, kinda similar to Yang's Aura forming flames when her Semblance is in effect.

The electricity that then shows up on her may be cosmetic or mostly cosmetic, like Yang's flames.