Shadow state

Leaping into the air, she entered her shadow state, every part of her body shifting gears in the span of a half-second.  Her lungs automatically stopped taking in air and her heart stopped beating.  She was suddenly hyperaware of changes in the atmosphere, movements of air as it passed through her body.  She had enough solidity for her body to seize the air molecules as they passed through her, and in this manner, each of her cells nourished itself.

It was strange, to feel so still.  She lacked even the most basic processes and routines that normally kept the body going, things people rarely gave a second thought to.  There was no near-silent roar of blood in her ears, no need to blink, no production of saliva in her mouth or movement of food and water in her gut.  She just existed.

Sentinel 9.6