Deep work in 50 minute blocks
Why 50 minutes is the session length we reach for most, and when 25 is still better.
By Giulia Conti
Twenty-five minutes is the classic focus session, and it is a fine place to start. It is short enough to begin on a bad day and long enough to get something moving. But for writing, design or code, it often ends just as you are getting going.
When we looked at how people used focus sessions in Halden, the longer ones stood out. Sessions of 50 minutes were finished as often as sessions of 25, and the days that had one were done far more often.
Settling in takes time
Most deep work has a warm-up. You reread the last paragraph, reopen the files, remember where you were. For many people that takes ten to fifteen minutes, which leaves a 25 minute session with barely ten minutes of real work.
A 50 minute session pays the warm-up once and then gives you half an hour or more at full speed. That is usually enough to finish a draft, a design pass or a tricky fix: in other words, enough to finish a good one thing.
Fifty and ten
The pattern we use ourselves is fifty minutes of focus and a ten minute break that is a real break: stand up, get water, look out of a window. Two of those before lunch is a very good morning, and most days it is enough for the one thing.
In Halden, pick the length when you start a session from Today. On Pro you can choose anything from 10 to 90 minutes, and Halden remembers the last length you used.
When 25 is better
Shorter sessions still have their place.
- On low days. When starting feels impossible, 25 minutes is a promise you can keep.
- For small things. If the one thing is a phone call or an email, a long session is just a long wait.
- When you are learning the habit. A few weeks of short sessions that get finished build more trust than long ones that get abandoned.
Let the session do the remembering
Whatever the length, the session is there so you do not have to watch the clock. Put the phone face down, let the lock screen keep time and let Halden log the minutes against the day. At the end of the month, your record shows which things took one session and which took three, and that is worth knowing when you pick the next one.