Kevin Kelly reviews The Year of Living Biblically, about a guy who "recently spent a year trying to follow all 700 plus rules he found in the Bible. These rules ranged from the obvious Ten Commandments to the more obscure details of Old Testament laws, which ultra orthodox Jews might follow: leaving side hair uncut, dwelling in huts on certain holidays, strict dietary routines. To give some idea of the physical transformation he underwent, the book offers this photo."
From a Newsweek interview:
Q: Are you a more religious person as a result of this experiment?Link
A: Well, I don't want to give away the ending, but let's say I started the year as an agnostic, and now I am a reverent agnostic. Whether or not there is a God, I believe in sacredness. Rituals can be sacred, the Sabbath can be sacred however you choose to observe it.