Pomodoro Timer

Twenty-five minutes is a default, not a rule. The right interval depends on what you are doing. If starting is the hard part, set 15 minutes; a smaller promise is easier to keep, and you can lengthen it once you are past that. Flashcard and vocabulary review works well at 20 minutes because recall fatigue arrives quickly. Problem sets in math or physics often need 35 to 45, because a single hard problem can take twenty minutes and being cut off mid-thought is costly.

The break matters as much as the work block. Stand up and leave the desk; get water; look at something far away. Do not open your phone. A five-minute break spent on social media reliably becomes twenty, and you come back with your attention scattered rather than rested. After four rounds, take the long break and do something genuinely restful.

The technique has a failure mode: if you are writing and the words are flowing, the chime at minute 25 is the worst possible interruption. When you notice you are in that state, ignore the timer. It is a tool for getting into focused work, not for interrupting it. The Pomodoro guide covers this in more detail, including interval suggestions by subject and how to use a week of rounds to find your real daily capacity.