Sounds kinda gross, no? Gives me the willies thinking about a nerve being 'flossed', lol :) (Actually, to be specific, it conjures up the image of THAT scene in 127 Hours...you know what scene I'm talking about...it involves a nerve.)
Nerve Flossing is Fun!
Since I have a super-glamorous desk-bound job, I do a lot of sitting. As a runner, sitting is the bane of our existence. Every so often, especially when I'm running more, I get that annoying pain in the arse...piriformis pain. Earlier this year it got really annoying and I decided to Google my issue. Enter: nerve flossing. Ironically enough, the exercise is performed while sitting :)
I don't remember how I got to it, but I know I clicked a lot of links and read a lot of crap, and watched a few painfully boring Youtube vids before I came to the holy grail of pain relief for piriformis syndrome and sciatica. More than likely, if you're a runner, or an endurance sitter, you've experienced some level of piriformis or sciatic nerve pain. Next time it starts to flare up, do this exercise. Seriously, it's amazing. Don't let the simplicity of the movement fool you. It's pure magic.
And, here is another good one: