Another Waster of Time

Fair warning: don't go here if you have work that must get done:

How old is your brain?

The instructions are in Japanese, though I figured them out after I'd done it once. Here they are for the impatient:

1. Click "Start"
   
2. Wait for the countdown from 3
   
3. Memorize the numbers' positions on the screen, then click the circles from the smallest (0 is smallest) to the largest
   
4. At the end of the game, the computer will tell you how old your brain is.

Have fun, but don't say I didn't warn you.

Edit: I'm pretty sure younger is better. You can improve your score with practice, too. My most recent score was 23 and I'm 49. ie, NinjaBaker: your brain is old beyond your years.