Clench your butt cheeks together throughout the whole administering of the test. Or rub Cold Ice or another variation of it such as Rub A5 35, any hot or cold therapeutic cream for muscle aches and pains would work. Basically this would keep your stress level high throughout due to the extreme discomfort. Actually anything that would cause discomfort throughout would work. Who knows you could probably even rub it on your balls and it would also work.