I don't agree with Dr. Mohler.
You can practice the stretching and breathing control aspects of yoga, the exercise related parts, without engaging in the eastern mysticism that is attached to the practices.
Mediation isn't a bad thing btw, we are commanded in Scripture to mediate on the precepts of the Bible.
I do wonder why he picks the battles he does. This isn't a big deal in actuality. You want to talk about a big deal in the SBC let's get him to talk about the ridiculous attachment with unsustainable, exponential growth our denom advocates, how about the ecclesiologically challenging multi-site church issue...why this? why now?