Sleep: Is it really that important?

I've never been the type of person that love to sleep all day. As a child I would make pillow forts that were solid enough to hide the light from my torch, allowing me to read late into the night. As I got older, I would wake up during the night and, unable to get back to sleep, would surf the internet. I eventually kicked that habit, instead staying up into the early hours before sleeping. I have continued to find, however, that if I go to bed at what is considered a 'decent' hour I wake up at least once during the night. I've always thought this to be 'abnormal' and assumed I had partial insomnia, but I'm starting to think that this is actually a more natural way of sleeping.

I've always been told that at night we sleep and our ancestors did the same because there was nothing else to do once it was dark. I've done some basic research and found that, while our ancestors did go to bed soon after dark, they did not sleep through the night, rather for around four hours before waking. They would talk and what not for a few hours before sleeping again for some time. From what I have read, the change in sleep patterns is attributed to the industrial revolution and widespread use of electricity. As more people had access to lighting, it no longer became necessary to sleep as soon as night fell and people began to stay up later, resulting in monophasic sleep.

I grew up in an industrial town, with many of my friend's parents doing shift-work. As a result, I was always aware of alternative sleep patterns, but never anything more sophisticated than sleeping during the day instead of at night.

My first encounter with drastically different sleep patterns was the 28-hour-day:

I loved the sound of it, and it even seemed fairly practical, but I figured it would result in confusion  and disconnect from the real world.

I continued exploring and found polyphasic sleeping. I found a 'popular' form was being awake for four hours and sleeping for 30 minutes, reducing the sleep needed per day and increasing productivity. Not only would this be impractical in so many ways (workplace, uni, socialisation etc) but I am the type of person that takes a lengthy time to fall asleep. If tired enough, I can sleep easily, but I am entirely unwilling to try such a drastic measure.

Biphasic sleep fell into my lap recently and quite unexpectedly. I stopped my research on sleep patterns a year ago and had all-but forgotten my findings. After an afternoon of research, it makes sense. Basically, the idea is that you sleep for three hours (for the super-dedicated), 4.5 hours (for most), or six hours (for others) in the morning. Notice that each number is a derivative of 90 minutes? The average sleep cycle is roughly 90minutes long, though people vary from 60 to 120 minutes. You then get up and go about your day. At some point you have a nap for around 90 minutes (another sleep cycle) and continue your day. The idea is that you can have your cake and eat it too; getting up early does not mean sacrificing late nights! Furthermore, you get more time in your day!

I plan to try 4.5 hours with a 90minute nap as I'm not a huge sleeper. While I'm not starting for a few weeks, my planned sleep pattern will be:
1:00am - 5:30am Sleep
6:00pm - 7:30pm Nap
In an ideal world, my nap would be around 3pm, and most likely will be where my uni classes allow, but reality dictates that it be later on. On two days of the week I will be rushing home from class to nap, hopefully getting it in immediately.

A large part of why I am interested to try this is that many people who have trialled such a sleep pattern have found they are more productive and have more energy. I have heard in the past (though I don't have any references to support this) that it is possible that we get too much sleep. I believe that this is probably very likely, based on the largely sedentary nature of the 21st century. We eat much more than we should for the energy we expend and it only makes sense that we sleep too much as well. It's also cited in many places that sleep is important for learning, so I am interested to see if having a nap in the afternoon helps with the learning process.

While there is plenty of scientific information out there, I think the main reason I am interested in biphasic sleep is that I'm a night owl and love staying up late, but see the practical benefits of being an early riser. I love knowing that few people are still awake and the imagery of writing or reading late into the night. For years as a child I woke up at 3:30am (and then more like 5:30am as I worked out I could stay up 'late') and loved having my day underway early. I love going to the gym in the morning, but don't like waiting until the traffic dies down. While I don't need to be anywhere early, I like to be, but late nights aren't something that I am sure I want to sacrifice.


Unfortunately, many of the people I have found online who have documented their biphasic sleep patterns seem to have reverted to monophasic sleeping after either a short period or an extended period. I know that it probably is not practical in the long term, but I can see the value of it for me at this stage of my life. I will be travelling overseas later in the year and know that I woun't be able to continue sleeping in this way, but during semesters, I see the value. At least I can say that I tried it!