Core conditioning and Back pain

My family has a history of back pain....genetically speaking.  My dad and sister are disabled due to spinal issues....so it is always in the back of my mind(no pun intended).  I strive to keep my back 'healthy' with the exercises I choose and activities I pursue.

Lately I have been reading about strengthening the core region and found this article and video very educational.  I don't believe I will be doing anymore crunches with my clients!