You can channel your rage into increasing your speed and agility rather than your strength.
Prerequisite(s): Rage class feature.
Normal: When a barbarian rages he gains a +4 moral bonus to Strength and Constitution and a +2 moral bonus to Will saves. He gains 2 additional hit points per Hit Dice and suffers a -2 to his Armour Class. He cannot use any Charisma, Dexterity or Intelligence based skills (except Acrobatics, Fly, Intimidate or Ride) or any ability that requires patience or concentration.
Undefeatable: The Collected Feats Sourcebook, Copyright 2009 – 2010, Louis Porter Jr. Design, Inc. Undefeated, Copyright 2011, Louis Porter Jr. Design, Inc.