I was 39 - Once
How old is your brain? Just click here to take the test.
The site instructions are in Japanese, so read below!
1. Touch 'start'
2. Wait for 3, 2, 1.
3. Memorize the numbers' position on the screen, then click the circles from the smallest number to the biggest number.
4. At the end of the game, the computer will tell you the age of your brain.
5. Forward the message and type your number in the subject line.
Forward it to your friends and include me.
Good luck ! http://flashfabrica.com/f_learning/brain/brain.html