Technique
Ultradian rhythm
Two or three deep blocks of about 90 minutes, each followed by real recovery.
The preset5 h 10
3x (focus "Deep work" 1h30m, long-break "Recovery" 20m), end on focus
How it works
Attention rises and falls in cycles of roughly 90 minutes through the day. Work with one cycle, then recover for 20 minutes.
Three blocks is a full day of deep work for most people. Do not plan more.
When it suits
- Big projects
- Exam preparation days
- Mornings with no meetings
Watch out for
Recovery means away from screens. Scrolling is not rest.