90-Minute Deep Work Block

A strategy for achieving deep, focused work through a dedicated 90-minute block, primarily in the morning, to build mental resilience and improve productivity.

Core Concept

  • Dedicate one 90-minute block early in day for complete focus
  • Resist all distractions and stay committed to single task
  • Build mental resilience through "no-go operations" (saying no to distractions)
  • Similar to Cal Newport's "Deep Work" philosophy

Implementation Guidelines

  • Turn off phone/put on airplane mode
  • Avoid internet access (can use Freedom app to block)
  • Stay focused on single task (writing, reading, or comprehension)
  • Avoid context switching, even for small interruptions
  • Be careful of bathroom breaks disrupting mental frame

Benefits

  • Accomplishes significant work in focused period
  • Builds ability to engage in deep work more easily throughout day
  • Develops skill to maintain focus in shorter periods later
  • Transfers to other life aspects (relationships, exercise, etc.)
  • Improves ability to resist external disruptions

Mental Framework Components

  • Uses prefrontal cortex for:
    • Duration: How long to maintain focus
    • Path: What approach to take
    • Outcome: What results to achieve
  • Builds ability to resist "DPOs" (other people's duration, path, outcomes)
  • Creates deeper connection with work through frame-setting
  • Helps brain orient toward specific goals

Context Switching

  • Brain good at emergency context switching
  • But 90% of valuable work requires sustained focus
  • Context switching is "deadly" to productivity
  • Must protect against unnecessary switches
  • Morning time (post-sleep) ideal for setting mental frame
AH

Andrew Huberman

Stanford neuroscience professor specializing in neural regeneration and brain states. Awarded for groundbreaking discoveries in vision research. Hosts popular podcast translating complex scientific topics for public understanding.

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