Top Ten Fasting myths debunked.

For a potentially and hopefully good start in her fasting enlightenment process ;), and especially for someone given to a body building and muscle preservation emphasis, perhaps she would appreciate the "leangains" site founded by Martin Berkhan. It heavily quotes from modern studies. Note too that it emphasizes intermittent fasting, specifically 16/8, though many of the fasting principles apply equally to longer fasts.

The following article within the site is entitled "Top ten fasting myths debunked".

http://www.leangains.com/2010/10/top-ten-fasting-myths-debunked.html