Inner Strength Feat 6
Source Pathfinder Advanced Player's Guide
Your strength is part of your rage, so as long as your anger remains, you can gather your strength and rage to overcome any sort of enfeeblement.
You reduce your Enfeebled condition's value by 1.
Traits
Anything that doesn't list another rarity trait (uncommon, rare, or unique) automatically has the common trait. This rarity indicates that an ability, item, or spell is available to all players who meet the prerequisites for it. A creature of this rarity is generally known and can be summoned with the appropriate summon spell.
BarbarianThis indicates abilities from the barbarian class.
ConcentrateAn action with this trait requires a degree of mental concentration and discipline.
RageYou must be raging to use abilities with the rage trait, and they end automatically when you stop raging.