1. In praise of double n-back games to keep one mentally sharp. I was doing single n-back games all of last week, started on the double n-back games, and am already hovering between 3 and 4-back levels after one day. I am pleased with my progress, but I know that there will be times playing the game when I will wish that I had hair so that I could pull it out in frustration.
2. Speaking of keeping a cognitive edge, be sure to grow up in a bilingual household to stay sharp. Lucky me; I grew up speaking English and Farsi, and then learned French and Hebrew as a kid.