Science of Fasting

Yom Kippur (Day of Atonement) is a day of fasting - and the Israeli medical world is providing lots of advice on how to fast correctly. http://www.jpost.com/servlet/Satellite?cid=1253627555169&pagename=JPost%2FJPArticle%2FShowFull

I think we can learn something from this, since we fast for 40 days in Lent.