You focus your psychic energy into your unarmed strikes so that they overwhelm their target when they strike.
Prerequisites: Base attack bonus +4, Improved Unarmed Strike, Stunning Fist, Concentration 4 ranks
Benefit: To activate Way of the Empty Palm, you must meditate to gain psionic focus. Once activated, this mantra lasts for 1 minute as long as you maintain psionic focus. While active, the save DC of your Stunning Fist attacks increases by 2. During this mantra, you may expend your psionic focus as part of a Stunning Fist attack to increase the duration of stunning effect on a failed save to 1d4 + 1 rounds.
Special: A fighter who meets the prerequisites may select this feat as one of his fighter bonus feats.