i can't stop trying to beat this thing: http://flashfabrica.com/f_learning/brain/brain.html

it's in Japanese, but basically the goal is to remember which numbers are where, and click the LOW ONES first after they're replaced with circles. so if you see 7, 3, 8, 0 click the circles in order 0, 3, 7, 8.

then it tells you how old your brain is.

I got a 31, 26, 28... all pretty close to my real age which is funny.

i'm going to do it next year so i can tell if i'm slowing down.