Mine sure made me jump! I'd been warned, but nothing can prepare you for that jolt.
Still, it didn't last long, and for me at least, there were no after-effects.
How did it go, TjTN1?
Fibromyalgia, degenerative disc disease, discectomy L4-L5 - (w/lots of Sciatic Nerve damage), frozen shoulder, Hashimoto's Thyroiditis, IBS, migraine, dizziness (mostly from visual stimuli), elevated liver enzymes, tachycardia, hearing loss (probably Menieres).