You can leverage your inertial armor psi-like ability to further insulate yourself from harm.
Prerequisites: Githzerai, inertial armor psi-like ability.
Benefit: You can expend one or more of your daily uses of the inertial armor psi-like ability granted by your githzerai heritage to instead gain the use of biofeedback as a psi-like ability. Your manifester level for this effect is equal to ½ your Hit Dice (minimum 1st).
Source: Complete Psionic, page 54.