I found the following quote/article very interesting.

“We know that people who consistently meditate have a singular ability to cultivate positive emotions, retain emotional stability and engage in mindful behavior,” lead author Eileen Luders, a postdoctoral research fellow at the UCLA Laboratory of Neuro Imaging, said in a statement. “The observed differences in brain anatomy might give us a clue why meditators have these exceptional abilities.”

Taken from; Meditation-may-lead-to-a-bigger-brain (www.upi.com)