“The amount of sleep required by the average person is five minutes more.”
Wilson Mizener
Are you a “night owl” with your greatest alertness, ability to concentrate and performance late at night or a “lark” that has a prefeference for getting up early to accomplish as much as possible?
Does it seem to be associated with job success and salary?
You should know that sleep-wake cycles are guided by two basic principles: They are linked to the light-dark cycle of the 24-day (circadian rhythms) and are aimed at helping us get an average number of hours of sleep each night (sleep homeostasis). Early and late risers have different patterns of hormone production at different times of the day and even body temperature (also a circadian rhythm which peaks in morning people early than night people corresponding to performance).Â
We also know that being a “night owl” or “lark” is genetically determined with early risers inheritinig two long versions of a particular gene known as PER3. Could this innocuous DNA sequence be associated with “the early bird getting the worm” more frequently?
A recent survey by Gallup suggests that 50% of employees report they are at their personal best of performing in the morning, 15% in the afternoon, 20% in the evening (up until 11pm) and 6% very late at night. In their survey, 70% of employees who earn at least $75,000 reported they do their best work in the morning compared to 40% who make under $30,000 (Results were based on telephone interviews with 1,019 adults in October 2007). They seem to be making an argument that early risers are really more successful.
However, other research is a bit less convincing. In one study, 356 people (29%) were defined as larks (to bed before 11pm and up before 8 am) and 318 (26%) were defined as owls (to bed at or after 11pm and up at or after 8 am). There was no indication that larks were richer than those with other sleeping patterns. On the contrary, owls had the largest mean income. There was also no evidence that larks were superior to those with other sleeping patterns with regard to their cognitive performance or their state of health ((Gale, C. & Martyn, C. (1998). Larks and owls and health, wealth and wisdom. British Medical Journal. December 19, 317, 1675-1677)).
Whether you are a “night owl” or “lark” new evidence is mounting that it is best to do your best to leverage your genetic strengths and try to avoid too much shifting of our sleep clock.
In a study to be published in the journal Lancet Oncology, the International Agency for Research on Cancer (part of the World Health Organization) will label shift work as a “probable cause” of cancer. Shiftwork directly affects the production of hormones such as melatonin, which in turn plays an important role in our immune system making us more vulnerable to cancers. Prior research has established an adverse relationship between shift work and performance and accidents–these studies suggest a negative link to health.
It looks like the old Ben Franklin saying of “early to bed and early to rise makes a man healthy, wealthy and wise” might need a revision–if anything, early risers appear to actually have a greater need for sleep….Be well….
[tags]insomnia, sleep, peak performance, envisia, envisia learning, REM, NREM, circadian rhythms, stress, health, job burnout, kenneth nowack, ken nowack, nowack[/tags]
Ken Nowack
Kenneth Nowack, Ph.D. is a licensed psychologist (PSY13758) and President & Chief Research Officer/Co-Founder of Envisia Learning, is a member of the Consortium for Research on Emotional Intelligence in Organizations. Ken also serves as the Associate Editor of Consulting Psychology Journal: Practice and Research. His recent book Clueless: Coaching People Who Just Don’t Get It is available for free for a limited time by signing up for free blog updates (Learn more at our website)
