PRODUCTIVITYDays to result

Ultradian Entrainment Framework

Sync with the 90-minute cycle

Problem it solves

low productivity

Best for

Individuals looking to improve their focus and productivity

Not ideal for

Those with severe attention deficits or irregular schedules

Overview

Why this framework exists

This framework discusses the importance of synchronizing our work and rest periods with the 90-minute ultradian cycle. By working in focused 90-minute increments, followed by a 10-15 minute rest period, we can improve our productivity and reduce fatigue.

Core principles

3 total
  1. Our internal biological processes are influenced by the 90-minute ultradian cycle.
  2. Working in focused 90-minute increments can improve our productivity and reduce fatigue.
  3. Disruptions to our natural ultradian rhythms can have negative effects on our focus and productivity.

Steps

1 steps
  1. Work in Focused 90-Minute Increments
    Work in focused 90-minute increments, followed by a 10-15 minute rest period. This can help improve your productivity and reduce fatigue.
    Pro tipUse a timer to keep yourself on track and avoid distractions during your work periods.
    WarningAvoid working for more than 90 minutes without taking a break, as this can lead to burnout and decreased productivity.

Checklist

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Examples

1 cases
The Benefits of Working in 90-Minute Increments

A study found that working in focused 90-minute increments improved productivity and reduced fatigue in individuals with irregular work schedules.

OutcomeImproved focus and productivity.

Common mistakes

1 traps
Ignoring the 90-Minute Cycle
Failing to work in sync with the 90-minute ultradian cycle can lead to decreased productivity and increased fatigue.

Origin story

How this framework came to be

The concept of ultradian entrainment has been studied in the field of psychology, particularly in relation to the basic rest-activity cycle. Research has shown that the 90-minute cycle is the natural rhythm of the human body, and that working in sync with this cycle can improve our focus and productivity.

Source

Traced to primary
Source · PODCAST
Time Perception, Memory & Focus | Huberman Lab Essentials
Andrew Huberman · 2025
Open source →

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