Unlike the usual uninterrupted night's rest, polyphasic sleep involves short and frequent power naps throughout the day. Among its most famous alleged supporters are Leonardo da Vinci and Napoleon Bonaparte, and today even athletes sometimes resort to such practices. But is it really useful? We find out how the so-called “sleep of geniuses” works.
What is polyphasic sleep (aka “genius sleep”)
According to the recommendations of the World Health Organization and most experts, the average person needs about 8 hours of sleep per day. The optimal duration – from 7 to 9 hours – supports the functioning of the heart, immune system, brain and overall recovery of the body. Lack of sleep, on the contrary, increases stress levels, cortisol, affects metabolism and even emotional state.
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In addition to the classical sleep model, there is another approach that dates back to the early 20th century: polyphasic sleep. It contrasts with the usual monophasic daytime sleep (continuous nighttime rest) and divides sleep into short periods throughout the day – the so-called microsleeps.
The concept was first described by psychologist J. S. Szymansky. However, it was popularized by historical figures who are credited with this sleep pattern: Leonardo da Vinci, Napoleon Bonaparte, Thomas Edison, Nikola Tesla, and Winston Churchill. Nowadays, such practices are sometimes mentioned by athletes, including footballer Cristiano Ronaldo and yachtsman Giovanni Soldini, who use short strategic naps to recover.
How polyphasic sleep works
There are:
- monophasic sleep – classic continuous night's sleep (approximately 8 hours);
- biphasic sleep – night sleep + short daytime rest;
- Polyphasic sleep is the distribution of sleep into several microperiods over 24 hours (both day and night).
Its idea is to enter the rapid eye movement (REM) phase of sleep faster, supposedly to reduce the total duration of sleep without losing the quality of recovery.
The most common variants of the polyphasic mode:
- Uberman — sleep for 15–20 minutes every 4 hours
- Everyman — 3–4 hours of uninterrupted sleep + short 10-minute naps every 4 hours
- Dymaxion – 30-minute naps every 6 hours
Potential benefits of polyphasic sleep
Proponents of this approach highlight several possible effects:
- longer active time of day – more hours of wakefulness;
- increased productivity — better concentration and energy after short naps;
- more efficient recovery – faster entry into the REM phase, which supposedly makes rest more “quality” even with less sleep.
Is polyphasic sleep harmful: possible risks
The balance between “optimizing sleep” and not getting enough sleep is a delicate one. Medical recommendations remain the same: most people need about 7–9 hours of sleep per night. Polyphasic sleep does not have a sufficient scientific basis to support its benefits. For an adult, this pattern is unnatural, and reducing total sleep time can lead to:
- fatigue;
- stress;
- irritability;
- cognitive and physical impairments.
Furthermore, a constant regime of “maximum productivity” and minimal rest can negatively affect health in the long term.
Why is this regime difficult to fit into ordinary life?
“Genius Sleep” is more suitable for people with flexible schedules – freelancers, artists, writers or athletes who can control their own time. For most people with a standard work schedule, such a system is practically incompatible with everyday life.
How to try polyphasic sleep
If you want to experiment, it is worth switching gradually. You can start with a biphasic regime – add a daytime nap and slightly reduce nighttime sleep. A “soft” version of the polyphasic regime – Everyman preserves 3-4 hours of uninterrupted nighttime sleep. The main thing is gradual adaptation and strict adherence to the schedule so that the body can rebuild.
The biggest challenge is how to fall asleep quickly.
The problem is often not the schedule itself, but the ability to fall asleep quickly. There are various techniques for falling asleep quickly, including the well-known “military method”, as well as other relaxation practices. However, it is important to consider: falling asleep quickly is a key feature of polyphasic sleep, because short periods of rest should immediately transfer the body to a deep recovery phase.
Based on material from vogue.it