The tissues damaged in the battle can regenerate. The secret agents inject to the body of xerj that cause all the forces working to eliminate injuries. Rapid recovery is one of the greatest challenges of evolution, so with each level of the health regeneration of most creatures increase by 1% per round.

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For highly advanced warriors of Swarm such as Guardian, Devourer, Lexx, Pancor , Usurper , Leviathan, Gigalord , Gigashadow it is even more difficult to achieve rapid regeneration. therefore, they get 1% of recovery per round with the development of the two levels of evolution.