It's really freakin' hard. I'm tryin' to fix my posture again. I learned how to Saturday. Problem is when I'm trying to elongate my spine, I tense up all my muscles in my butt & legs to do so. Makes sitting around at work quite a bit of work & a pain in the butt, almost literally. So yeah, this is what I do at work to keep myself entertained while I'm doing real work. Oh, and listen to WCS-able music.
Now back to your regularly scheduled programming... ;-)