The New York Times bestselling author and senior fellow at the Discovery Institute blends science and religion in this thoughtful guide that teaches modern believers how to use the leading wellness trend today—intermittent fasting—as a means of spiritual awakening, adopting the traditions our Christians ancestors practiced for centuries into daily life.

Wellness minded people today are increasingly turning to intermittent fasting to bolster their health. But we aren’t the first people to abstain from eating for a purpose. This routine was a common part of our spiritual ancestors’ lives for 1,500 years.