"The premise was simple: a prank phone call to AT&T, asking them to install a telegraph in my home. I've been doing these corporate pranks for a long time, but I have to say that this was one of the weirdest examples of corporate behavior I've ever seen. Every one of the customer service reps was exceedingly helpful -- honestly, they were -- but none of them seemed to know what the hell a telegraph was."
That Zug site is full of a lot of wonderful nonsense.
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.