How to use the online timer
The method is simple enough to explain in a sentence: work in a defined block, take a real break, repeat, and take a longer break after four. It was written up by Francesco Cirillo in the late 1980s and named after the kitchen timer he used as a student, and almost everything written about it since has been an argument about the numbers rather than the principle.
These pages cover the classic twenty-five and five, the longer fifty and ten for work that takes time to get into, and setting your own intervals when neither fits the task. The choice matters less than the discipline around it: one task per block, no switching, and the break spent away from the desk rather than on the same screen. An office day that starts at seven has room for two clean cycles before the first meeting exists.
The most common way it fails is the break. Shortened to a glance at messages, it stops being a break and the method quietly reverts to an ordinary long session with interruptions in it. Counting completed blocks over a week is also an unusually honest measure of how much of a working day contains actual work.