On the flip side, brain-wave scans show that we need to talk out our problems. When we speak, the prefrontal cortex of our brain — the source of executive and cognitive power — lights up like a Christmas tree. It’s this power that members of the Young Presidents’ Organization, Entrepreneurs’ Organization, Vistage, and other CEO organizations experience in their monthly forums (confidential meetings of eight to 10 leaders free to talk about anything). Ninety percent of the benefit is the chance members get to speak about the deeper challenges or bigger opportunities facing them.