l*u*l*u*
one of the signs that you have fasted to completion is a clear tongue... it is an indicator of good health and balance.
in the past, i have seen ayurvedic and traditional chinese medicine (TCM) doctors who use the tongue to diagnose the condition of your body.
anyway, i found this today - it's quite interesting...
http://beyondwellbeing.com/herbs/tongue-diagnosis.shtml
- lulu