This article is from the Bicycles FAQ, by Mike Iglesias with numerous contributions by others.
From: Bruce Hildenbrand <bhilden@unix386.Convergent.COM>
Oh well, I have been promising to do this for a while and given the present
discussions on nutrition, it is about the right time. This article was
written in 1980 for Bicycling Magazine. It has been reprinted in over 30
publications, been the basis for a chapter in a book and cited numerous
other times. I guess somebody besides me thinks its OK. If you disagree
with any points, that's fine, I just don't want to see people take exception
based on their own personal experiences because everyone is different and
psychological factors play a big role(much bigger than you would think)
on how one perceives his/her own nutritional requirements. Remember that
good nutrition is a LONG TERM process that is not really affected by short
term events(drinking poison would be an exception). If it works for you
then do it!!! Don't preach!!!!