Re back pain.

This is an area were I have some expertise, as I have suffered greatly over the years. My yoga practice is built around this, as much as anything. I have found, in the long term, that postural awareness is crucial to getting and maintaining a healthy spine. We all have a good idea of how a healthy spine should curve. It's a matter of whatever you do, being aware of maintaining this shape, especially if you are putting extra stress on yourself in a workout. It's a good idea at the start of a workout, or just at anytime, really, to just check that especially the curve in the small of your back is established, and your chest is open. All else follows from this. Sorry for nagging!