This tool was built by Serge using established research and public sources. My work focuses on the practical side of focus, habits, and discipline. My tools are for educational purposes and give practical guidance, not professional advice.

The famous 25-minute timer never fit me. Some days I could go an hour, other days 15 minutes was a stretch. So instead of forcing one fixed number, this tool builds a split around how long you can really focus today. A lot of focus also comes down to timing and setup, so it pairs well with knowing when your mind is sharpest and clearing whatever is pulling your eye off the task.

How this works

The tool starts from your own focus span and adjusts it for today's energy. It then sets a break at about a fifth of your work block, and tells you when to take a longer break. Short, frequent resets keep your attention fresher than one long grind.

Understanding your result

Use the split as a starting rhythm, then tune it. If you still feel sharp at the end of a block, stretch it a little. If you fade early, shorten it. The goal is steady work you can repeat, not a heroic session you cannot do again tomorrow.

Important note

Breaks only help if they truly rest you. Scrolling your phone often leaves you more scattered than before. Short sleep also shrinks your focus span, so if your number feels low, check the Sleep & Focus Estimator and see what interruptions are costing you.

Scientific basis

The idea of matching work to attention limits and resting between blocks is well supported:

• Attention span: how long focus naturally holds
• The Pomodoro Technique: work blocks and breaks

This tool gives general educational information. It does not replace personal or professional advice.