Stoßwellentherapie I

In an effort to fix my hurty foot the doc who x-rayed it last week suggested Stoßwellentherapie or 'extracorporeal shockwave therapy'.
I googled it (as one does) scared myself, and talked to the heilpraktikum who's also trying to fix the foot problem, who sucked his teeth loudly and told me in no uncertain terms how painful the therapy can be.
But it was ok, not a wonderful way to spend 5-10 minutes, but no pain no gain as they say, as a matter of fact it's more twingey now than it was during, if at the end of it I can go back to running, I'll be happy.