I became an avid fan for Transformers after watching the movie and I realized that all the Transformers have stronger body physique than homo sapien because they are exoskeleton types. But one thing that made me wonder is how can they recuperate so quickly, I mean, when Optimus Prime told Sam that Bumblebee's vocal processor has been damaged, Ratchet holds his arm and a laser light shone on Bumblebee's neck and... Bumblebee coughed. So I want to know what that light was and does the Transformers history explain how they can heal so quickly?