The stillness hypothesis goes like this: During poker, each moment of stillness is a moment of less unhappiness, and less tilt, which is pretty much the same thing. By 'tilt' I mean 'any non-A-game performance or mindset'. A scientific hypothesis should be falsifiable, meaning that the hypothesist provides an experiment that could disprove the hypothesis. I will do that. It’s not ideal that the experiment will rely on your subjective reporting for data, but we’ll get to that. Why bother?