Meditation Discipline (D20 Modern Feat)
From D&D Wiki
Some heroes have such strong willpower that they can ignore pain to a high degree and focus their minds to completely shut out distractions.
Prerequisite: Wis 13+
Benefit: The hero may choose Concentration as a class skill. The skill is now modified by Wisdom.
Note: This feat may be used to assist checks made to hold your breath or other such "meditative" actions.