After just 5 weeks of daily 5-to-16-minute training sessions in focused-attention meditation ("Relax with your eyes closed, and focus on the flow of your breath…"), research subjects showed strong brain-wave changes associated with positive emotions, says a team led by Christopher A. Moyer of the University of Wisconsin. The findings suggest that the benefits of meditation may be more accessible than was previously believed, the researchers say.

Source: Frontal Electroencephalographic Asymmetry Associated With Positive Emotion Is Produced by Very Brief Meditation Training