Oh thank you.
The thing is, plugging your ears shouldn't do anything; no pressure is released from your ears, so plugging them wouldn't have an effect. I don't think.
I had a teacher who believed that you had to do something really silly involving acupressure points and pressing your knuckles on a hard surface; it worked for the one person I saw doing it. However, at the time, I tried it, but screwed up, so I just sat there staring at the clock for 30 seconds like you were supposed to do in the teacher's meathod. It worked just as well.
Placebo effect?