“I am studying for an exam” usually means: seven hours on Sunday, a litre of coffee, panic and half of the material in your head by Tuesday. There is a cheaper and more effective way.
The brain does not memorise in proportion to the number of hours. It memorises in proportion to the number of repetitions spread over time. This is a principle known for a hundred years (the spacing effect), and yet most students do exactly the opposite: everything at once, at the last minute.
Why a study marathon does not work
After 60–90 minutes of intense study, concentration and the pace of memorising fall. The following hours are mostly a feeling of “I am working hard”, not a real gain in knowledge. On top of that, material crammed in one session has no chance to go through sleep, which consolidates memory. You study on Sunday, sleep once, write on Monday: that is one repetition, not a system.
A marathon also has a hidden cost. It associates learning with effort, stress and guilt. And what something is associated with is not what you come back to.
What a micro-session does
10 minutes a day for two weeks is 14 separate contacts with the material, each separated by sleep. Each such contact is one recall, and recalling builds long-term memory. 140 minutes spread over 14 days beats 7 hours in one day, and not by a few percent.
A short session has one more advantage: starting it does not hurt. “I will sit down for 10 minutes” is a barrier you cross every day. “I have to cover a whole topic today” is a barrier you put off.
How to build a micro-study habit
Pin the session to something you already do every day: after breakfast, on the bus, before a series. The same time, the same place, for two weeks, until you stop thinking about it.
One session is one task: one game level, one set of flashcards, five tasks from a paper. Not “as much as I can get through”, but a portion set in advance that will definitely fit in 10 minutes.
Do it every day, including days when you do not feel like it. A habit is built by regularity, not intensity. Better 5 minutes without enthusiasm than zero sessions and a guilty conscience.
Do not catch up. If you skip a day, do the usual portion the next day, not a double one. Doubling turns the habit back into a marathon.
When ordinary revision is not enough
Micro-sessions consolidate what you already understand. They will not replace learning material you have never got to grips with. If after a few days you see that you are “revising” things you never really knew, that is a sign you need someone to explain the topic from the basics: a teacher, a friend, a tutor. Revision comes after understanding, not instead of it.
Where to start
Choose one subject and one form: the free Sprelli mini-games, flashcards or a set of tasks from a paper. Set a fixed time. Do the first session today, the second tomorrow. After two weeks you will see for yourself the difference in how much stays.