I did a talk for PhillyCHI on World Usability Day 2013 (http://phillychi.acm.org/?p=1426). The topic was
"Quantified-self: how mobility and behaviorism are changing the way people perceive themselves" - You can view the slide deck here:
http://www.slideshare.net/TinaBejianBinnion/wud2013quantifiedselftalktbb1-51113981