We've had good threads on this in the past; I'm not finding the one I'm thinking of—"emg" is too short for the search engine, and I can't recall any other search criteria/terms.

I agree with the others; apprehension & fear are your nemeses here—not the test itself. When we get startled by the "zap", there's a tendency to think of it as painful—when it's really just a little... unnerving.

When it's over, treat yourself to something fattening.

Doc