Biofluid Technique

Biofluid Technique (生液の術, Seieki no Jutsu) is an advanced Hiden that enables the user to manipulate the fluids in their body. This can be simple fluids like water inside the body to prevent dehydration in areas where water is scarce, to more complicated fluids like lactic acid, the compound responsible for causing muscles to tire out during exercise or intense, physical combat. One can also manipulate the cerebrospinal fluid in the brain in order to further cushion it from blunt force trauma. This is done by a unique form of chakra processing, directly and indirectly utilizing Yin energy to manipulate the body's fluids.

The Hiden was created one hundred fifty years ago by Reikan Ekazu, a medical nin who possessed a vast knowledge of the body's anatomy, including the fluids that keep it together. He learned of a way to manipulate the body's fluids to improve a user's performance both inside and outside of combat by utilizing both a direct, and indirect form of Yin energy.