Biorhythm 1

Biorhythm

Biorhythm chart over a 66-day period:    Physical     Emotional     Intellectual

Biorhythm (from Greek βίος - bios, "life"[1]

and ῥυθμός - rhuthmos, " any regularrecurring motion, rhythm"[2]) is an attemptto predict various aspects of a person's lifethrough simple mathematical cycles. Mostscientists believe that the idea has no morepredictive power than raw chance,[3] andconsider the concept an example ofpseudoscience.[4][5][6][7]

BeliefsBasic rhythm details

•• Physical cycle

•• 23 days; Circavigintan•• coordination•• strength•• well-being

•• Emotional cycle

•• 28 days; Circatrigintan•• creativity•• sensitivity•• mood•• perception•• awareness

•• Intellectual cycle

•• 33 days; Circatrigintan•• alertness•• analytical functioning•• logical analysis•• memory or recall•• communication

According to believers in biorhythms, a person's life is influenced by rhythmic biological cycles that affect one'sability in various domains, such as mental, physical and emotional activity. These cycles begin at birth and oscillatein a steady (sine wave) fashion throughout life; thus, by modeling them mathematically, a person's level of ability ineach of these domains can be predicted from day to day.Most biorhythm models use three cycles: a 23-day "physical" cycle, a 28-day "emotional" cycle, and a 33-day"intellectual" cycle. Although the 28-day cycle is the same length as the average woman's menstrual cycle and wasoriginally described as a "female" cycle (see below), the two are not necessarily in any particular synchronization.Each of these cycles varies between high and low extremes sinusoidally, with days where the cycle crosses the zeroline described as "critical days" of greater risk or uncertainty.

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In addition to the three popular cycles, various other cycles have been proposed, based on linear combination of thethree, or on longer or shorter rhythms.[8]

CalculationThe equations for the cycles are:

• physical: ,• emotional: ,• intellectual: ,where indicates the number of days since birth.Basic arithmetic shows that the simpler 23- and 28-day cycles repeats every 644 days (or 1-3/4 years) while the triple23-, 28-, and 33-day cycles repeats every 21,252 days (or 58.2+ years).

HistoryThe notion of periodic cycles in human fortunes is ancient; found for instance in natal astrology and in folk beliefsabout "lucky days." The 23- and 28-day rhythms used by biorhythmists, however, were first devised in the late 19thcentury by Wilhelm Fliess, a Berlin physician and patient of Sigmund Freud. Fliess believed that he observedregularities at 23- and 28-day intervals in a number of phenomena, including births and deaths. He labeled the23-day rhythm "male" and the 28-day rhythm "female," matching the menstrual cycle.In 1904, psychology professor Hermann Swoboda claimed to have independently discovered the same cycles. Later,Alfred Teltscher, professor of engineering at the University of Innsbruck, came to the conclusion that his students'good and bad days followed a rhythmic pattern of 33 days. Teltscher believed that the brain's ability to absorb,mental ability, and alertness ran in 33-day cycles.[8] One of the first academic researchers of biorhythms was alsoEstonian-born Nikolai Pärna, who published a book in German, called "Rhythm, life and creation" in 1923.The practice of consulting biorhythms was popularized in the 1970s by a series of books by Bernard Gittelson,including Biorhythm — A Personal Science, Biorhythm Charts of the Famous and Infamous, and Biorhythm SportsForecasting. Gittelson's company, Biorhythm Computers, Inc., made a business selling personal biorhythm chartsand calculators, but his ability to predict sporting events was not substantiated.[9]

Charting biorhythms for personal use was popular in the United States during the 1970s; many places (especiallyvideo arcades and amusement areas) had a biorhythm machine that provided charts upon entry of date of birth.Biorhythm charts were common in newspapers, usually found with horoscopes, at the time as well. Biorhythmprograms were a common application on personal computers; and in the late 1970s there were also handheldbiorhythm calculators on the market, the Kosmos 1 and the Casio Biolator.[10][11] Though biorhythms have declinedin popularity, there are numerous websites on the Internet that offer free biorhythm readings. In addition, there existfree and proprietary software programs that offer more advanced charting and analysis capabilities.

PlausibilityProponents of biorhythmics call it an established interdisciplinary area of scientific endeavor which is stillspeculative—a protoscience. Critics state that biorhythms are based only upon numerological associations. Theplausibility of biorhythmics is contested by mathematicians, biologists and other scientists.[citation needed] The mostbasic assertion is that even if it is assumed that physiological rhythms do exist, it is not clear why they shouldnecessarily begin on the day of one's birth.In some ways, biorhythmics resembles chronobiology, the study of biological rhythms. Through medical research, doctors have found that there are periodic biological cycles in a person's lifespan, such as the circadian rhythm (from Latin circa diem; literally, "about a day"), but few doctors believe they correspond to those described as "biorhythms." To proponents, these discoveries (among others) demonstrate that people are affected by

Biorhythm 3

physiological, emotional and intellectual rhythms, though the exact relationships to the biorhythm cycles are notprecisely understood. Studies regarding the effects of biorhythms on the human condition are still conducted.[citation

needed]

The biorhythm theory is often presented as having scientific validity. Biorhythm critics' responses range fromopposing it as harmful, to ignoring it, to treating it as entertainment. Some of the criticisms of the various theories inthe category of biorhythmics are:• The choices of periodical function, frequency and phase are arbitrary.•• The assumption is made that the cycles are the same for everyone.•• The frequency is assumed to be constant.• Evidence tends to be anecdotal.• Arguments are made based in ignorance of number theory (thus possibly being pseudomathematical as well as

pseudoscientific).[citation needed]

•• Tests of the hypothesis have basic flaws.•• The quantitative generalizations of complex human behavior are inadequate.•• Hypotheses are not formulated precisely.• Experimental data fail peer review.•• Experiments cannot be replicated.• Some unscrupulous practitioners resemble professional fortune-telling fraud artists.Some biorhythm critics say that biorhythms can be thrown off by such occurrences in the calendar as the beginningof the new year, holidays, or something as simple as the start of the week.[citation needed]

There have been some three dozen studies supporting biorhythm theory but all of them have suffered frommethodological and statistical errors.[] An examination of some 134 biorhythm studies found that the theory is notvalid.[]

Supporters continued defending the theory after Hines' review of 134 studies, causing other scientists to consider thefield as pseudoscience:

An examination of some 134 biorhythm studies found that the theory is not valid (Hines, 1998). It isempirically testable and has been shown to be false. Terence Hines believes that this fact implies thatbiorhythm theory 'can not be properly termed a pseudoscientific theory'. However, when the advocates of anempirically testable theory refuse to give up the theory in the face of overwhelming evidence against it, itseems reasonable to call the theory pseudoscientific. For, in fact, the adherents to such a theory have declaredby their behaviour that there is nothing that could falsify it, yet they continue to claim the theory is scientific.(from Carroll's "The Skeptic's Dictionary")[7]:175

References[1] βίος (http:/ / www. perseus. tufts. edu/ hopper/ text?doc=Perseus:text:1999. 04. 0057:entry=bi/ os1), Henry George Liddell, Robert Scott, A

Greek-English Lexicon, on Perseus[2] ῥυθμός (http:/ / www. perseus. tufts. edu/ hopper/ text?doc=Perseus:text:1999. 04. 0057:entry=r(uqmo/ s), Henry George Liddell, Robert

Scott, A Greek-English Lexicon, on Perseus[3][3] "No evidence exists to support the concept of biorhythms; in fact, scientific data refute their existence."[4][4] "The theory of biorhythms is a pseudoscientific theory that claims our daily lives are significantly affected by rhythmic cycles overlooked by

scientists who study biological rhythms."[5][5] .[7][7] .[8] http:/ / www. skepdic. com/ biorhyth. html[9] Hoffmann, Frank W., and William G. Bailey, Mind and Society Fads, 1992.[10] http:/ / www. vintage-technology. info/ pages/ calculators/ k/ kosmos1. htm[11] http:/ / mycalcdb. free. fr/ main. php?l=0& id=326

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Further reading

Books• Aschoff, Jurgen (ed.), Biological Rhythms (Handbooks of Behavioral Neurobiology). 1981.• Bartel, Pauline C., "Biorhythm: discovering your natural ups and downs", An Impact book. ISBN 0-531-01355-3• Bentley, Evie, Awareness: biorhythms, sleep, and dreaming. ISBN 0-415-18872-5• Crawley, Jacyntha, The Biorhythm Kit, UK: ISBN 1-85906-032-3, London Biorhythm Company Limited.• Edlund, Matthew. Psychological time and mental illness. 1987. ISBN 0-89876-122-0• Evans, James R., (ed.) and Manfred Clynes (ed.), Rhythm in psychological, linguistic, and musical processes.

ISBN 0-398-05235-2•• Gittelson, Bernard, Biorhythm: A Personal Science, Futura Publications. 1976 ISBN 0-86007-361-0• Hodgkins, Zerrin Biomatch Z. 1998. ISBN 0-9531983-0-8• Lapointe, Fernand, Biorythmie: comment prâevoir vos bons et mauvais jours. ISBN 0-88566-029-3• Louis, Arthur M., Journalism and Other Atrocities. 2010. ISBN 978-1-4538-1520-5• Roche, James, Biorhythms at your fingertips. ISBN 0-7137-1562-6• Thommen, George S., Is This Your Day. 1973. ISBN 0-517-00742-8• Debarbieux, Patrick, l'ABC des biorythmes. 1999. ISBN 2-7339-0615-1

Research publications

Biorhythmics

• Hines, T.M., "Comprehensive review of biorhythm theory". Psychology Department, Pace University,Pleasantville, NY. Psychol Rep. 1998 Aug;83(1):19–64. (ed. concluded that biorhythm theory is not valid.)

• D'Andrea, V.J., D.R. Black, and N.G. Stayrook, "Relation of the Fliess-Swoboda Biorhythm Theory to suicideoccurrence". J Nerv Ment Dis. 1984 Aug;172(8):490–4. (ed. concluded that there was a validity to biorhythmwhen the innovative methods of the study are put to use.)

• Laxenaire M., and O. Laurent, "What is the current thinking on the biorhythm theory?" Ann Med Psychol (Paris).1983 Apr;141(4):425–9. [French] (ed. Biorhythm theory is disregarded by the medical world though it hasachieved a bit of fame with the public)

• Wolcott, J.H., R.R. McMeekin, R.E. Burgin, and R.E. Yanowitch, "Correlation of general aviation accidents withthe biorhythm theory". Hum Factors. 1977 Jun;19(3):283–93.

• Khalil, T.M., and C.N. Kurucz, "The influence of 'biorhythm' on accident occurrence and performance".Ergonomics. 1977 Jul;20(4):389–98.

• "Biorhythm in gynecology--a renaissance of Fliess' theory of periodicity?". Arch Gynecol. 1979 20July;228(1-4):642. [German]

• Nijsten, M.W., and S.E. Willemsen, "Accidents a matter of chance? The significance of lunar phases andbiorhythms in trauma patients". Ned Tijdschr Geneeskd. 1991 21 December;135(51):2421–4. [Dutch] (ed.'critical' biorhythm days were not found to increase the number of accidents experienced by subjects.)

Chronobiology related

• Hastings, Michael, " The brain, circadian rhythms, and clock genes (http:/ / bmj. bmjjournals. com/ cgi/ content/full/ 317/ 7174/ 1704)". Clinical review. BMJ 1998;317:1704–1707 19 December.

• U.S. Congress, Office of Technology Assessment, " Biological Rhythms: Implications for the Worker (http:/ /www. wws. princeton. edu/ cgi-bin/ byteserv. prl/ ~ota/ disk1/ 1991/ 9108_n. html)". U.S. Government PrintingOffice, September 1991. Washington, DC. OTA-BA-463. NTIS PB92-117589

• Ashikari, M., Higuchi, S., Ishikawa, F., and Tsunetsugu, Y., " Interdisciplinary Symposium on 'Human Beings and Environments': Approaches from Biological Anthropology, Social Anthropology and Developmental

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Psychology (http:/ / www. cam. ac. uk/ societies/ cujif/ abstract/ 020825. htm)". 25 August 2002•• "Biorhythm experiment management plan", NASA, Ames Research Center. Moffett Field, 1983.•• "Biological Rhythms and Human Adaptation to the Environment". US Army Medical Research and Materiel

Command (AMRMC), US Army Research Institute of Environmental Medicine.• Ebert, D., K.P. Ebmeier, T. Rechlin, and W.P. Kaschka, "Biological Rhythms and Behavior", Advances in

Biological Psychiatry. ISSN 0378-7354

External linksBiorhythms (http:/ / www. dmoz. org/ Society/ Religion_and_Spirituality/ Divination/ Biorhythms/ ) at the OpenDirectory Project

Article Sources and Contributors 6

Article Sources and ContributorsBiorhythm  Source: http://en.wikipedia.org/w/index.php?oldid=570219237  Contributors: 2D, 2over0, Aaron Kauppi, Alansohn, Alexcuns84, Alfpooh, Andre Engels, Angela, Antilived,Antirealityhero, Authorharb, BF, Balance Terence, Belinrahs, Bensaccount, Blake-, Bob1960evens, Bobblehead, Bobo192, Bogdangiusca, Boud355, Brad101, BradBeattie, Bradtcordeiro, Breno,Capricorn42, Chris the speller, Chzz, Clayoquot, Cogito-ergo-sum, Cyan, DARTH SIDIOUS 2, Dachande663, Dana boomer, David Gerard, Dbachmann, Dchall1, Detos, Dgw, DirkjanOchtman,Dispenser, Dj Capricorn, DreamGuy, E=MC^2, Eclecticology, Ema Zee, Enric Naval, Epbr123, Esthameian, Farseer, Flameviper, Florian Blaschke, Fragglet, Frank0031, Frecklefoot, Fredrik,Fubar Obfusco, Gadget850, Gaius Cornelius, Geezerbill, Geni, George585, Glane23, Gobonobo, Gonzalo Diethelm, Graham87, Götz, Haakon, HaeB, Hasanbay, HelloAnnyong, Heron, Hgilbert,Histrion, Hob Gadling, Hordaland, HumphreyW, Innv, Interested2, InverseHypercube, JCarlos, JaanMatti, Jacyntha Crawley, Jclerman, Jerzy, John101987, Karl-Henner, Katimawan2005,Kauczuk, Kevin B12, Kingky, Krelnik, La Corona, Lexor, Life of Riley, Lothar97, Macedonian, Markbenecke, Mcsee, Mel Etitis, Mellery, Metamorf, MonteShaffer, Morn, Moros, Msrasnw,Naniwako, Napata102, Netchain, Nojoking, Novum, Nsaa, O.Koslowski, Olivier, Omnipaedista, Onodevo, Oroso, Palnatoke, Paranoid, Paul Sinnett, Pearle, Pigman, Pikiwyn, Pit, Pollinator,Profesorb, QuackGuru, Qwasty, Racecarjones, Rami radwan, RayTomes, RedWolf, Reddi, Rich Farmbrough, Rjwilmsi, Robbiewolf, Saudade7, Seaphoto, Shadow1, Sheehan, Sircha, SlowJog,Smalljim, Solarusdude, Tagus, Thecheesykid, Tommy2010, Toussaint, Travis.Thurston, Tristessa de St Ange, Trondheim, Valodzka, Vladliv, WikiLaurent, Woodshed, WurmWoode, Xyzzy n,Yworo, Z maqsood, 258 anonymous edits

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