The priesthood probably consumed more beef products being that they could afford these more so than the commoner.
Check out a book called Food: The Gift of Osiris. In this book is a study on the remains of the mummies of what the ancient Egyptians ate.
Food: The Gift of Osiris.
by Darby, William J., Paul Ghalioungui, & Louis Grivetti.
ISBN: 0122034015
As far as exercise, I am not entirely certain.
[This message has been edited by ausar (edited 08 February 2005).]