Meditation is a form of mental exercise that has become a popular US health practice. Regular practice of meditation is reported to produce changes in mental state and resting electroencephalogram patterns that persist beyond the time-period of active practice.   Source: Business Insider Neuroscientist Sara Lazar found that people who practiced meditation had more gray matter in the part of the brain linked to decision-making and working memory: the frontal cortex.  While most people see their cortexes shrink as they age, 50-year-old meditators in the study had the same amount of gray matter as those half their age. Participants in the study averaged about 27 minutes of the habit a […]