Walking Creates A Thirst For Knowledge
pnas.orgA study that backs up what a lot of smart people (including PG) have been circling around lately.
http://www.blog.sethroberts.net/2010/12/15/walking-creates-a-thirst-for-dry-knowledge/
http://www.paulgraham.com/addiction.html Abstract (I can't access the paper) mentions aerobic exercise training and lessened memory loss. But I like the title.