Father Gabriele Amorth is an old school priest. The octogenarian told The London Times this week that, since he was ordained way back in 1954, he has cast out some 160,000 demons. I believe that gives Father Gabriele some authority on the devil. So when he told the Times, “Practicing yoga brings evil,” he got my attention. I’ve long considered yoga a benign form of exercise, no more harmful than, say, aerobics or Pilates or, the apparent latest craze, Zumba. But after doing some research, I’m inclined to agree with Father Gabriele, the exorcist. While yoga indeed has a physical...