As expected, personal (fitness) big data are being visualized for new insights... Using d3.js.
It just may be that data are not typical, since those who wear Jawbone may not be typical.
that is "free for non-commercial use" with Creative Commons — Attribution-NonCommercial 3.0 Unported — CC BY-NC 3.0 license.
Which Cities Get the Most Sleep? - The Jawbone Blog
This Map Claims to Show When People Go to Sleep - ABC News
LOOK: What Time Does America Go To Bed? @ huffingtonpost