You can hurt your body doing yoga. But that damage pales in comparison to the damage that you can do to both your mind and body if you don't do yoga -- or some other activity that allows you to "connect" or "tune in" to the quiet beneath the chaos. If I can't convince you to try yoga, then at least do this: Experiment to find your own way of stretching your body and soul. Don't let the spectre of potential ill effects keep you inert and brittle. Because everything can hurt you. We humans just have to weigh the options. And then we have to choose the path that offers the best chance of suppleness and grace at a level of risk we can stand.