03/18/2010 05:12 am ET Updated Dec 06, 2017

PBS' 'This Emotional Life': Is Stress Ever Good For Us?

Neuroscientist Dr. Robert Sapolsky teaches that sometimes "the right stress" can make us feel stimulated. He explains how stress affects our physical and mental selves -- often with positive results. Find out more about stress - and why it's important - at This Emotional Life.