Improved Toughness [General]
A creature with this feat is significantly tougher than normal.
Base Fortitude save bonus +2.
The creature gains a number of hit points equal to its current Hit Dice. Each time it gains a Hit Die (such as by gaining a level or advancing), it gains 1 additional hit point. If it loses a Hit Die (such as by losing a level), it loses 1 hit point permanently.
A fighter may select Improved Toughness as one of his fighter bonus feats.
A character may gain this feat multiple times. Its effects stack.
This feat is described as it appeares in Monster Manual V.