Recover Breath

 
Prerequisite(s): Con 13+, Breath Weapon.
 
Benefit: You reduce the interval between uses of your breath weapon. You wait 1 round less than usual before breathing again, but always at least 1 round. The feat stacks with the effects of metabreath feats, reducing the total time you must wait to use your breath weapon again by 1 round.
 
Special: If you have multiple heads with breath weapons, all breath weapons use the reduced interval.
 
Source: Draconomicon