ABC TV's Catalyst program sent one of their reporters to investigate the effect of an 8 week Mindfulness program. At the end of the 8 weeks, the reporter, Graham Phillips, performed better on memory tests, and had reduced his reaction time to unexpected events. His Brain MRI also showed changes. After just 8 weeks of Mindfulness, he increased the size of his Dentate Gyrus by 22.8%. Huge. The Dentate Gyrus is the part of the brain where new brain cells are made. That's a lot of new brain cells. Check it out here.