Since a few years I regularly use Anki, a flashcard system, to memorize and remember information, in particular German words. This daily activity sometimes feels like a breeze and sometimes more like an endless chore. It requires focus, and some day I have the feeling that I’m forgetting words and concepts that normally are a piece of cake. Anki provides reports about the usage, which in my case don’t show any particular pattern (e.g. better accuracy on the weekend or in the evening).