Making Polyphasic Sleep More Efficient: A Focus on Ultradian Rhythms

As someone who has experimented with almost every sleep schedule out there, I’ve observed firsthand the complexities of aligning sleep schedules with our body’s natural ultradian rhythms. This article delves into these intricacies, using the Everyman 3 (E3) schedule as an illustrative example and drawing on my personal observations and data.

The Importance of Ultradian Rhythms

Ultradian rhythms are recurrent periods or cycles repeated throughout a 24-hour day. In the context of sleep, they refer to the cycles our bodies naturally go through during sleep, including different sleep stages. Misalignment of these rhythms with our sleep schedule can add unnecessary stress to the body, leading to inefficient sleep. For a deeper understanding of ultradian rhythms, check out this Medium article I wrote.

A diagram of the E3 sleep schedule from polyphasic.net

The E3 Schedule: An Example

The E3 schedule, consisting of a core sleep period and three 20-minute naps, serves as an example of how misalignment can occur. If the core sleep period is placed randomly, it may not align well with our natural sleep cycles, leading to inefficient sleep.

Ideal E3 wih only one ultradian break within the core sleep

The Impact of Misaligned Sleep Schedules

When sleep periods are misaligned with our ultradian rhythms, it can lead to shorter or irregular sleep cycles. This can make it feel like you’re adapting to a much more difficult sleep schedule than necessary. While we’re using the E3 schedule as an example, this principle applies to any sleep schedule.

Illustration of an inefficient E3 core where the first REM cycle is interrupted by an ultradian break and the last one is interrupted by an alarm

Personal Observations and Data

My personal sleep tracking data, collected from my smartwatch, provides a real-world example of these principles. The data shows how REM sleep can be shortened due to misaligned ultradian breaks. In one instance, the first REM period was shortened, the second was normal, and the third sleep block was interrupted halfway through to accommodate an ultradian break. This led to a delayed start of REM sleep and waking up during REM.

Optimizing Sleep Schedules

The key to making polyphasic sleep more efficient lies in aligning our sleep schedules with our ultradian rhythms. This involves measuring our natural sleep cycles and scheduling our sleep periods accordingly. This approach can help optimize rest and reduce the stress on our bodies.

For a deeper understanding of the Everyman sleep schedules, check out this video.

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