Complaining is normal, but it's hardly ever helpful. Unhappily, some individuals complain without realizing it. How Complaining Can Change the Brain Travis Bradberry at Weforum.org in “Why Complaining Rewires Your Brain to be Negative” reveals how grumbling can alter the brain's anatomy.  In fact, Dr. Bradberry explains that complaining can reduce the part of the brain necessary for critical thinking ...