Published September 19th, 2007
Sleep
When I read it a few years ago, William Dement’s The Promise of Sleep shaped my understanding of the nature of human sleep.
In a nutshell, the take-homes were: Most or all people need right around 8 hours of sleep a night, sleep disorders can lead to various physical and mental ailments, getting less than your needed amount of sleep puts you at a sleep deficit that will you’ll need to repay, and no one knows the long term impact of not getting enough sleep.
For the last few years I’ve been averaging about 6-7 hours per night. When uncaffienated, I’m tired, which is a sign that I don’t get enough sleep. My sleep deficit is somewhere in the thousands of hours. I’m not sure if this makes a difference or not in the long run. But I can’t seem to conform my sleep patterns to what society expects.
Naturally, I’m busy. Admittedly at my own choosing, but I’ve got my main job, a handful of small side-projects, and some hobbies. Of course, there’s the family, owning and maintaining a house, and all that goes with that. There aren’t enough hours in the day and every day I leave stuff undone.
After so many years of not being able to get enough sleep, now my body can’t seem to get enough sleep. I have trouble sleeping more than 5-6 hours at a clip and am often up in the middle of the night. On one hand, I use these extra hours to get things done. On the other I’m not sure what this behavior does to my productivity or my long term health.
Additionally, I have a strong diurnal cycle. I get sleepy around the same times every day…from 11pm to about 5am and again from 1pm to 3pm. Within those windows I can sleep without too much trouble. Outside of those windows I usually can’t sleep at all, even if I’m tired. If I wake up at 4:45am, I just get up because I know that the chance of falling back to sleep is pretty small. But I love mid-day naps and would take one every day if I could.
Contrast this to a friend of mine who can sleep 9-10 hours each night but can’t nap. She can be woken up 3-4 times in the middle of the night and fall right back to sleep. Wake me up in the middle of the night and I’ll be up for two hours. This made the first few years of being a parent rather challenging.
Travel gets interesting as well. In Europe or Asia, I get nailed with jet lag. I can sleep in chunks of 3-4 hours, maybe 5 at most, but I’m always up in the middle of the night. Even if I’m dog-tired, I just can’t sleep. It may be 3am in the UK but my body thinks its still 9pm and is not ready to wind down.
Another observation is that TV is bad for sleeping. If I put the TV on in the night, I’ll stay up an extra couple of hours watching. On the other hand, books are good for sleeping. I start reading and I’m usually out pretty quickly.
My ideal day? Up at 5am, in the gym by 6, out and showered by 7:30, off to work, lunch around noon, nap from 1-3pm, work until about 7, head home and get about 3 hours of family / free time.