David M. O’Leary is a Jesuit priest and a senior lecturer in comparative religions and medical ethics at Tufts University in Medford, Mass. He contributed articles on heaven and hell to The Encyclopedia of Religious and Spiritual Development.

John Byl is co-author of Christian Paths to Health and Wellness (2007). He is a professor of physical education at Redeemer University College in Ancaster, Ontario, Canada. He can discuss the biblical foundation behind the Christian fitness movement.

Peter Walters is co-author of Christian Paths to Health and Wellness (2007). He is an associate professor in the applied health science department at Wheaton College in Illinois.

The Rev. Maria Erling is a Lutheran pastor and an associate professor of the history of Christianity and global missions at the Lutheran Theological Seminary at Gettysburg in Gettysburg, Pa. She contributed a chapter on mainline Protestants in New England to Religion and Public Life in New England: Steady Habits Changing Slowly.

Daniel Terris is director of the International Center for Ethics, Justice and Public Life at Brandeis University in Waltham, Mass. He contributed a chapter on Jews and African-Americans in the New England states to Religion and Public Life in New England: Steady Habits Changing Slowly.

J. Ron Eaker is a doctor and the author of Fat Proof Your Family: God’s Way to Forming Healthy Habits for Life (2007). He blogs at Fat Proof Your Family and can discuss women and fitness from a Christian perspective. He lives in Augusta, Ga.

David Hackett is an associate professor of religion at the University of Florida in Gainesville. He is an expert on American religious history and the sociology of religion.  

Susan Bordenkircher is the author of Yoga for Christians, which is based on a class she developed called “Outstretched in Worship,” a Christian approach to yoga. She is based in Fairhope, Ala.

Brad Bloom is the publisher of Faith and Fitness magazine, an online lifestyle magazine about Christianity and fitness that is based in Yorkville, Va. He wrote a 2008 article for the magazine on why the church should be involved in physical fitness. In 2010, the magazine will focus on the role the church can play in fitness and on […]