Damage Reduction (Ex)
At 7th level, a barbarian gains damage reduction. Subtract 1 from the damage the barbarian takes each time she is dealt damage from a weapon or a natural attack. At 10th level, and every three barbarian levels thereafter (13th, 16th, and 19th level), this damage reduction rises by 1 point. Damage reduction can reduce damage to 0 but not below 0.