Contents The law of accelerating returns We live in the times of accelerating acceleration. The Moore's Law makes the world smaller, faster, more connected and more efficient. We are now able to touch and feel Kurzweil's generalization: the law of accelerating returns .
Polyphasic sleep refers to the practice of sleeping multiple times in a 24-hour period—usually more than two, in contrast to biphasic sleep (twice per day) or monophasic sleep (once per day). The term was probably first used in the early 20th-century by psychologist J.S. Szymanski who observed daily fluctuations in activity patterns (Stampi 1992). It does not imply any particular sleep schedule.
Findings Suggest That A Biphasic Sleep Schedule Not Only Refresh
The power of sleep Many of us try to sleep as little as possible. There are so many things that seem more interesting or important than getting a few more hours of sleep, but just as exercise and nutrition are essential for optimal health and happiness, so is sleep. The quality of your sleep directly affects the quality of your waking life, including your mental sharpness, productivity, emotional balance, creativity, physical vitality, and even your weight. No other activity delivers so many benefits with so little effort!
Usually sleepers pass through five stages: 1, 2, 3, 4 and REM (rapid eye movement) sleep. These stages progress cyclically from 1 through REM then begin again with stage 1. A complete sleep cycle takes an average of 90 to 110 minutes. Stages of Sleep
A couple days ago, I saw a post about polyphasic sleep on LifeHack.org. Since then I’ve been emailed about this topic as well, probably because I’ve written previously about becoming an early riser. Polyphasic sleep involves taking multiple short sleep periods throughout the day instead of getting all your sleep in one long chunk.
It is well to be up before daybreak, for such habits contribute to health, wealth, and wisdom. - Aristotle Are morning people born or made? In my case it was definitely made. In my early 20s, I rarely went to bed before midnight, and I’d almost always sleep in late. I usually didn’t start hitting my stride each day until late afternoon. But after a while I couldn’t ignore the high correlation between success and rising early, even in my own life.
Ultradian Rhythms & the 20-minute Break I had a Psychology teacher back at New College (who's now apparently an expert in the Klingon language), who used to talk about how the human body had these ±90-minute cycles. And that if you could become aware of yours, you could do Great Things -- particularly because you could learn the optimal time to snag a nap versus, say, try to cure small-cell carcinoma. Not sure if this is exactly what he was talking about, but I am certainly fascinated by the idea of ultradian rhythms: Ultradians are the regular recurrence in cycles of less than 24 hours from one stated point to another, as certain biologic activities which occur at such intervals, regardless of conditions of illumination. Commonly used in sleep research to describe individual stages of sleep that occur within intervals of an organism's circadian rhythm, and especially to refer to the 4-hour ultradian cycle.
I’ve been really diving into Trello this week, which I mentioned in my December 2013 Updates post. I now have 17 different Trello boards for managing various projects. You know me — when I get into something new, I love to fully immerse myself in it. Best way to learn quickly. More than 100 people have signed up for Trello based on my recommendation in the past few days, and I’m sure hundreds more will sign up soon, so I’ll share a bit more about how I’m using it. I don’t get paid for referrals since it’s a free service, but I can see how many people sign up via my referral link.
Effects of biphasic sleep on alertness and performance
In short photoperiods, human sleep is biphasic. THOMAS A. WEHR.
The Power of the Sleep Cycle « Glen Rhodes Ok, I’ve been talking to people for a long time about the fact that you can get by on 6 or even 4.5 hours of sleep per day without question. The secret is NOT the amount of sleep, but rather the number itself; a multiple of 90 minutes will change your life. One thing I should mention, is that because we are analog beings, and not computers, that which could be 90 minutes for some people, might be 80 minutes for another, or 100 minutes for another; you will eventually learn the length of your sleep cycle by watching the times you naturally wake up and turn over, make a mental note of the time / interval. But assuming that 90 minutes is the average, these are the best lengths of sleep that will not make you feel groggy.
Easy way to reset your sleep cycle: Stop eating | Parenting Squa Not eating for 12-16 hours can help people quickly reset their sleep-wake cycle, according to a new study from the Harvard Medical School. This discovery can drastically improve a person's ability to cope with jet lag or adjust to working late shifts. Scientists have long known that our circadian rhythm is regulated by our exposure to light. Now they have found a second "food clock" that takes over when we are hungry.