It's Fine to Change the Timer
Let me tell you something that might feel like heresy: the 25 minutes in the Pomodoro Technique is not sacred.
Francesco Cirillo didn't hand down the 25/5/15 structure on stone tablets. He started with two minutes. He landed on 25 because it worked for him, studying for university exams in the late 1980s. That doesn't mean it's the optimal number for your work, your brain, or your Tuesday afternoon.
And yet, people treat Pomodoro like a rigid system. "I tried it, but 25 minutes is too short for my deep work." "I can't get into flow in 25 minutes." "My tasks take longer than that."
Cool. So change the timer.
The principle matters more than the number
The Pomodoro Technique isn't about 25 minutes. It's about this:
Commit to a single task for a defined period. Work until the timer rings. Take a deliberate break. Repeat.
That structure works whether your "defined period" is 15 minutes, 25 minutes, 50 minutes, or 90 minutes. The magic isn't in the number—it's in the commitment and the boundary.
When you set a timer, you're telling your brain two things:
- "This is all you have to do right now." (Reduces overwhelm)
- "You only have to do it for this long." (Makes starting easier)
The timer creates a container. The size of the container is negotiable.
When 25 minutes is too short
If you're doing deep creative work—writing, coding, design, research—25 minutes might feel like you're just warming up when the timer goes off. You finally load the problem into your head, start making progress, and ding—time for a break.
Try 50 minutes instead.
Some people call this the "extended Pomodoro." It's long enough to get into flow but short enough to avoid mental fatigue. You're still following the structure (commit, work, break), just with a bigger time window.
The breaks matter more at 50 minutes. Don't skip them. After 50 minutes of intense focus, your brain needs 10-15 minutes of actual rest to consolidate what you just worked on. Stretch. Walk. Stare out the window. Don't open Twitter and call it a break.
When 25 minutes is too long
If you're doing shallow work—email, admin tasks, quick reviews—25 minutes might feel like overkill. You knock out the task in 10 minutes, then sit there twiddling your thumbs waiting for the timer.
Try 15-minute sprints.
Short bursts work great for tasks you've been procrastinating on. "I'll just work on this annoying thing for 15 minutes" is an easier commitment than 25. You can string three 15-minute sprints together and knock out an hour of tedious work without it feeling like a slog.
The 90-minute ultradian cycle
Your brain has a natural rhythm called the ultradian cycle—roughly 90 minutes of high alertness followed by 20 minutes of low alertness. This is the same cycle that governs your sleep stages at night.
Some people align their Pomodoros with this rhythm: 90 minutes of work, 20 minutes of break.
This is long. It's not for beginners. But if you're experienced with focus work and have tasks that require sustained deep thinking (research, writing, architecture design), the 90-minute block can feel more natural than breaking every 25 minutes.
The risk: if you lose focus at minute 30, you've just wasted an hour. That's why most people start with shorter timers and work up to longer ones as they build focus stamina.
Match the timer to the task
Here's a framework:
| Task Type | Timer Length | Break Length | |-----------|--------------|--------------| | Deep work (writing, coding, research) | 50 minutes | 10-15 minutes | | Standard focus (reading, planning, design) | 25 minutes | 5 minutes | | Quick tasks (email, admin, reviews) | 15 minutes | 3 minutes | | Ultradian deep dive (complex problem-solving) | 90 minutes | 20 minutes |
You can mix and match throughout the day. Start your morning with a 50-minute deep work session on your hardest task. After lunch, knock out three 15-minute sprints on admin work. End the day with a 25-minute standard Pomodoro to tie up loose ends.
The timer isn't one-size-fits-all. It's a tool you adjust based on the work.
What doesn't change
No matter how long your timer is, these rules still apply:
1. Single-task only. One thing. No email, no Slack, no "just quickly checking" anything. The session is sacred.
2. The break is mandatory. Your brain consolidates learning during rest. Skipping breaks doesn't make you more productive—it makes you more tired.
3. The timer is a commitment. When you start it, you're committing to work until it rings. If you bail early every time, you're training yourself to ignore the timer. Honor the commitment.
The timer is a tool, not a religion
People get weirdly dogmatic about productivity techniques. "You have to do it exactly this way or it doesn't work."
That's nonsense.
The Pomodoro Technique is a tool. Tools are meant to be adapted. If 25 minutes doesn't fit your work, change it. If your brain works better with 50-minute blocks, use 50-minute blocks. If you need 15-minute sprints to beat procrastination, do that.
The structure is what matters: commit, work, break, repeat.
The numbers are negotiable. 🐸
Want to try different timer lengths? FocusFrog lets you customize work and break durations in Settings. Default is 25/5/15, but you can set it to whatever fits your work. Try it free on iOS and Android.