Well, here’s my .02....
We (my Dear Wife and I) recently purchased a yoga program from a guy named Paige Falkenberg. You might know him as former 4-time WWE World Champion Diamond Dallas Page. His program, DDP Yoga, is all about stretching, movement, strengthening one’s body, and becoming more flexible and limber. There is NO component of chanting or meditation as far as I can tell.
I am a Christian, and as far as this program is concerned, I don’t see anything wrong with it. Now, as far as ‘regular’ yoga is concerned, I don’t cotton to that.