I’m 54 hours into my exciting polyphasic sleep experiment. For the past two and half days I’ve been sleeping for 20 minutes every 4 hours around the clock. As you can imagine, I’m getting a lot of “but… why?” type questions in various forms. On my first blog post that kicked off the experiment I jokingly cited the reason “because it’s weird.” I’m having a lot of fun subjecting myself to this sleep experiment, but the truth is there really is a compelling argument for the “why” question.

Here’s my understanding explained in a fairly basic way that I think captures the why.
As I understand it, people general have two energy reserves: our primary energy reserve and what people know as our “second wind.” The primary energy reserve doesn’t last very long, 4-5 hours perhaps, while the second wind kicks in later to provide enough energy to stay up for 16+ hours. From what I understand (and it makes sense to me based upon my experience, not because I understand the biology), the primary energy reserve doesn’t last long but is quickly recharged with a relatively small amount of rest. The “second wind” energy, in contrast, lasts longer but takes much longer to replenish with sleep.
This makes sense based on my experience, and I think you’ll agree. Imagine that you normally get 8 hours of sleep and for whatever reason you only get 6 or 7 hours in a particular night. You may notice that you feel fine during the morning but crash in the afternoon. This is because you are starting with a full (or nearly full) primary energy reserve but once that runs out you find that your “second wind” doesn’t kick in as strong as it should. Coffee anyone?
The idea behind polyphasic sleep is to abandon the second wind altogether. It takes too much sleep to recharge that puppy and it’s not worth it. In polyphasic sleep, you don’t spend hours of sleep trying to charge the second wind because you never stay awake long enough to need it (napping every 4 hours, in my case). By using only the primary energy reserve, you actually require less sleep, because the primary energy reserve can recharge with dramatically less sleep than it takes to charge the second wind. The result: I’m running on about 2 hours of sleep per 24 hour period.
It’s as if I’ve slowed time, added hours to the day, or extended my life – pretty awesome however you want to look at it.
Catering to the primary energy reserve isn’t a new concept. Many people take mid-afternoon naps, which serve to quickly replenish the primary energy reserve instead of worrying about the stubborn (and unreliable) second wind.
For the last 54 hours since I began this experiment I’ve been repeatedly depleting and recharging my primary energy reserve. So long second wind – you take too long to recharge! If you need to get caught up, see the index below for a list of the posts about this experiment and don’t forget to subscribe by rss or by email to easily receive future updates (about once per day during this experiment). I suggest subscribing by email because it’s easiest – and unsubscribing is a snap if you find the updates boring.
My goal is to continue the experiment until I am fully adjusted (two week minimum) at which point I will continue indefinitely.
What do you think? Does this sound like pseudo science mumbo jumbo, or am I on to something? (between you and me, my main reason for trying this is more along the lines of “because it’s weird” and “I’m curious – can it work?”) Let the experiment continue!
EXPERIMENT INDEX:
- Polyphasic Sleep Experiment – Day Zero
- Polyphasic Sleep Experiment – Day One
- Polyphasic Sleep Experiment – Day Two
- Why Polyphasic sleep? | A simple and compelling answer
- Polyphasic Sleep Experiment – Day Three
- Polyphasic Sleep Experiment – Day Four
- Polyphasic Sleep Experiment – The Epic Napstake (nap + mistake)
- Polyphasic Sleep Experiment – The Success, Conclusion, and Addiction