I've been being nosey and checking out my neighbors here on envs.net and came across an interesting gemlog entry on the capsule of ~/vee.
They are running an experiment to see if daily mental math exercises will show a gain of score/ability over time. Being the nerd that I am, this immediately appealed to me.
I have thus created my own mental math project page and have done my excercise for day one. Here's hoping I show progress, cause some of the questions truely made my brain do a double take and twinge.
I am using the Arithmetic Game ~vee linked to, available on zetamac.com.