Snark Hunting is a great site for information about naming and branding in American culture. As a NASCAR fan, I am keenly aware of how brands can have an impact. Most of the cars running are more easily identifiable by their number and sponsor than the driver. Anyway, if you are an advertising geek, this is the site for you.
I have found it helpful to do the stretching exercises my physical therapist recommends. Do some core strengthening exercises, such as the ones highlighted at The Mayo Clinic. By keeping your core strong, your back won't put itself in a position to cause that sciatica pain you are having.