The Gift of Life is a process by which a Wraith can give its stored life energy to another. By doing so, they can heal that person of most injuries, whether they are Wraith or human. In humans, it will reverse the effects of the feeding process. They usually reserve it for only their "brothers" and most devout worshippers, though it can also be used to revive dead enemies for questioning. (SGA: "Enemy at the Gate")