Originally Posted by Teddiursa of the Sky
The brain does not require energy in order to function when you are reanimated. Read World War Z and Zombie Survival Guide to learn more on that.
This is where I must strongly disagree. Everything needs Energy in order to function according to the laws of thermodynamics. Animated, not reanimated, blah blah, blah blah, blah blah, it doesn't matter you cannot defy the laws of physics.