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Chris Bailey's Productivity Project

Year-long productivity experiment by author Chris Bailey that popularized calculating Biological Prime Time through systematic energy tracking, providing practical methods for identifying personal peak productive hours.

Last updated: 2026-03-17 19:47

Overview

Chris Bailey is a productivity expert and author who conducted a year-long series of productivity experiments, publishing his findings in "The Productivity Project." His work popularized practical methods for calculating Biological Prime Time.

The Productivity Project

Bailey dedicated an entire year after graduating from university to experimenting with different productivity techniques, documenting what worked and what didn't.

Calculating Biological Prime Time

Bailey developed a systematic approach to identifying personal peak productive hours:

The Tracking Method

  1. Duration: Track for 2-3 weeks minimum
  2. Hourly Ratings: Each hour, rate your energy and focus on a 1-10 scale
  3. Pattern Recognition: Look for consistent peaks and valleys
  4. Application: Schedule important work during identified peak hours

What to Track

Key Insights

Bailey's research revealed:

Practical Application

During Peak Hours

During Low-Energy Periods

The Book

"The Productivity Project: Accomplishing More by Managing Your Time, Attention, and Energy" synthesizes Bailey's year of experiments into actionable advice.

Impact

Bailey's accessible, experiment-based approach helped bring concepts like Biological Prime Time from academic research into mainstream productivity practice.

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