Expect a warm-up: focus takes minutes to arrive, so work in blocks
September 29, 2026 · 29 min read
Huberman says task switching needs a 5 to 10 minute ramp-up, describes warming up into focus at your workspace, and recommends working in roughly 90-minute ultradian blocks, with precise work in the morning and creative work later. Scheduling deep work in protected blocks respects how attention actually starts and fades.
The rules, numbers and steps worth keeping in front of you.
- Focus takes about five to ten minutes to arrive, or about six in a good setup.
- Expecting instant focus is unfair to your brain. Warm up as you would in a gym.
- Instant focus happens only with urgent interest or pressure.
- Bright overhead light, a screen at nose level and standing shorten the ramp.
- Fix your gaze on one point for 30 to 60 seconds before starting.
- Label a transition between tasks. Even ten seconds helps.
- After deep work, allow five to ten minutes before the next task.
- Keep the phone out of transitions and breaks.
- Work in blocks of about 90 minutes, started on purpose with a timer.
- Performance drops for everyone past 100 to 120 minutes.
- Do one or two blocks a day, three at most, spaced two to four hours apart.
- Every 45 minutes, look far away for five minutes.
- Precise, rule-bound work early. Creative work later.
- Cap the day at three tasks that need real focus.
This is the short form. The full insight has every expert's reasoning, their own words and the sources.