When I was at the GoodWill store yesterday, I saw a little kid hold up an LP and say to her dad, "What a big CD!" Her dad and I had a chuckle about that.
In a similar vein, these kids today don't know that we used to store our data on 5 1/4 inch diskettes. If you are familiar with these, remember how you felt when you learned you could make a notch on the edge of the disk and you could then use the other side FOR FREE? For some pointless nostalgia, visit the official 5.25" disk sleeve archive.
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.