It wasn't for me when I was losing weight. Even now, I do prenatal yoga 3x/wk, and it's not too much different from regular yoga classes I've taken, and it isn't doing much to keep me physically fit. I've lost a LOT of muscle tone since stopping aggressive weight training classes, and my cardio fitness is in the tank. I remember reading somewhere that yoga burns like 70 calories an hour. That's not much more than sitting upright in a chair (LOL). I call yoga my flexibility/stretching training, which is essential when you're doing weight lifting and running. Add in cardio at least 3x/wk for the best benefits.
Muffin, 2010
Bubba, 2013
"You've probably heard the expression 'I believe in God, just not organized religion.' I don't think people would say that if the church truly lived like we are called to live. The expression would change to 'I can't deny what the church does, but I don't believe in their God.' At least then they'd address their rejection of God rather than use the church as a scapegoat." Francis Chan