Combat Vigor( Player's Handbook II, p. 88)
[Combat Form, Fighter Bonus Feat]
When you maintain your combat focus, your clarity of purpose and relentless drive allow you to overcome your body's frailties. Minor wounds heal in a matter of seconds, and you quickly recover from even a grievous blow.
Combat Focus (PH2) , WIS 13, base attack bonus +9,
While you maintain your combat focus, you gain fast healing 2. You lose this benefit when your combat focus ends. If you have three or more combat form feats, the benefit of this feat improves to fast healing 4.
A fighter can select Combat Vigor as one of his fighter bonus feats.