Work out for a smile :)

I think this idea is interesting: a solar powered shirt that rewards you for moving around by smiling at you; of course, it frowns at you if you don't move around too. I haven't seen a picture of one in the dark, but I would imagine it would work better in the dark than in the light because it is an LED based smile.  That makes me wonder how much the solar powered part will really work. However, it is an interesting idea, and could be a fun/nerdy shirt to own if I ever wanted to put the time into the DIY to make it. Click on the image for a treehugger.com article about it.


R