Prefrontal cortex is inefficient with energy.

PFC is new evolutionarily and hasn’t developed the efficiency found in other areas. Thus it burns more energy and works suboptimally when enough energy is not available.rR1

  1. David Rock, Your Brain at Work: Strategies for Overcoming Distraction, Regaining Focus, and Working Smarter All Day Long, 1st ed (New York: Harper Business, 2009). (See notes.)