well, just so you know, I do mental pushups. Only once every two days, so as to allow the affected area of my brain to recover. I drink special protein shakes (for actual pushups) and take fatty acids and lecithin (since brain is 1/3 wt these).
What is mental pushups? Any considerable workout for short period of brain.
(start off easy)
1. Science News (cellulosic fuel article)
2. Astronomy (article on inflationary universe) - getting harder..
3. Scientific american (with HEAVY biological / genetic articles and more cosmology -- not too hard, don't want to bust the cosmology section of my brain :)
4. ...
(more various bio, nature, science, computer mags)
9. ...
10. AAAS journal - (uuuuuuhhhhhh UUHH!!) made it!
11. watch history of Meitner, Einstein on PBS (to slowly cool down )
(Whew, will go have a pumpkin flavored brewsky --from sea dog brewery in Main, with a dog that looks like a polar bear on front) and disolve all the new found knowledge with alcohol)
(no thinking observed for next two days ..)
And just so you know I am also vastly interested in developing my knowledge of 'branes' as physicists call them.