Wikipedia says that this test ‘is not to assess the reaction time, but to see how many times the button is not pressed’. I never missed the button (nor did I ever press it improperly), but it still recommended that I consider medical evaluation. (My time was even worse than RomeoStevens's, so I'm not saying that I did well if the job is to measure reaction time!)
r/Fitness does a weekly "Moronic Monday", a judgment-free thread where people can ask questions that they would ordinarily feel embarrassed for not knowing the answer to. I thought this seemed like a useful thing to have here - after all, the concepts discussed on LessWrong are probably at least a little harder to grasp than those of weightlifting. Plus, I have a few stupid questions of my own, so it doesn't seem unreasonable that other people might as well.