Premium Essay

Sleep Is One of the Richest Topics in Science Today

In:

Submitted By calisolo
Words 597
Pages 3
Sleep is one of the richest topics in science today: why we need it, why it can be hard to get, and how that affects everything from our athletic performance to our income. Daniel Kripke, co-director of research at the Scripps Clinic Sleep Center in La Jolla, Calif., has looked at the most important question of all. In 2002, he compared death rates among more than 1 million American adults who, as part of a study on cancer prevention, reported their average nightly amount of sleep. To many, his results were surprising, but they've since been corroborated by similar studies in Europe and East Asia. Kripke explains.
Q: How much sleep is ideal?
A: Studies show that people who sleep between 6.5 hr. and 7.5 hr. a night, as they report, live the longest. And people who sleep 8 hr. or more, or less than 6.5 hr., they don't live quite as long. There is just as much risk associated with sleeping too long as with sleeping too short. The big surprise is that long sleep seems to start at 8 hr. Sleeping 8.5 hr. might really be a little worse than sleeping 5 hr.
Morbidity [or sickness] is also "U-shaped" in the sense that both very short sleep and very long sleep are associated with many illnesses—with depression, with obesity—and therefore with heart disease—and so forth. But the [ideal amount of sleep] for different health measures isn't all in the same place. Most of the low points are at 7 or 8 hr., but there are some at 6 hr. and even at 9 hr. I think diabetes is lowest in 7-hr. sleepers [for example]. But these measures aren't as clear as the mortality data.
I think we can speculate [about why people who sleep from 6.5 to 7.5 hr. live longer], but we have to admit that we don't really understand the reasons. We don't really know yet what is cause and what is effect. So we don't know if a short sleeper can live longer by extending their sleep, and we don't know if a long

Similar Documents

Free Essay

Egypt

...Matt Cannis Western Civilization Essay question #1 October 13th, 2012 The main key to the civilization of Egypt was the Nile River. The Nile over flowed once a year leaving deposits of minerals and fertile black soil, which made it the richest agricultural region in the Mediterranean world(17). The whole civilization ran up and down the Nile, no more than fourteen miles away in either direction. Egyptian history was divided into three periods called kingdoms(Old, Middle, New and two intermediate periods). Egypt was divided into two kingdoms, lower in the north and upper in the south, since the Nile flows from south to north. Two of the major cities were actually developed in Lower Egypt, Nekhen and Abydos(18). The two communities were pretty developed for their time. Pharaohs(which means “great household”) were appointed to rule over Egypt(19).They formed their own political organization, religion, industry, and new ideas. We know the least about the history of the Old Kingdom. Historians relied on texts from the deceased. They came to discover that the Egyptians were very keen on the aspect of death. We do however find out a lot about the Pharaohs. They were considered the link between the land, people, and their gods(21). Taxes, trade, and labor were all administered by the Pharaoh as well. Even though the Pharaoh was in so much power, they needed help. So they appointed “governors” called nomarchs, which usually was from their family. Since Egypt was so huge, communication...

Words: 1455 - Pages: 6

Premium Essay

This Is for Management and Business

...Unit I – Introduction to Organizational Behavior Topics Covered in this Unit: ------------------------------------------------- 1. Definition of Organizational Behavior - Slide ------------------------------------------------- 2. What Managers Do? (Functions of Management, Henry Mintzberg’s 10 Managerial Roles, Katz’s Essential Management Skills) – Slides ------------------------------------------------- 3. Contributing Disciplines to the field of OB - Notes ------------------------------------------------- 4. Challenges and Opportunities for OB - Notes Supplementary Material Contributing Disciplines to the Field of OB Organizational behavior is an applied behavioral science that is built on contributions from a number of behavioral disciplines. The predominant areas are psychology and social psychology, sociology, and anthropology. Psychology’s contributions have been mainly at the individual or micro level of analysis, while other disciplines have contributed to our understanding of macro concepts such as group processes and organization. Psychology: It is the science that seeks to measure, explain and sometimes change the behavior of humans and other animals. Psychologists concern themselves with studying and attempting to understand individual behavior. Those who have contributed and continue to add to the knowledge of OB are learning theorists, personality theorists, counseling psychologists, and most important, industrial and organizational psychologists. ...

Words: 2920 - Pages: 12

Premium Essay

Animals

...the neologisms in the American press. The latter is observed via examining the cases of neologisms brought forward by B. Obama. In this paper an attempt was made to throw light upon many words and phrases that are used in modern American political lexicon, as well as to examine some political neologisms that help to cover the 2008 Presidental Election Campaign. The graduation paper consists of an introduction, two chapters, conclusion and bibliography. The introduction manifests the main topic of the research, the major phenomenon related to the investigation and to basic structure of the paper. In throws light upon the development of the political language which promotes the creation of neologisms. Chapter One analyzes the political language in general as well as the four main political styles that the political language is...

Words: 5225 - Pages: 21

Premium Essay

Nilanjana

...India of my dreams is a place where there’s an IIT  for every Harvard and a Narayan Murthy for every Bill Gates. Where youngsters don’t hop aboard a plane to US for their dream job, rather stay back in their homeland  and work for its welfare. An India, where those not related by blood are united by beliefs. By their love & not separated by faith or color; where it’s not a crime to wed out of ones community, where millions aren’t stashed in Swiss accounts rather with every individual. India of my dreams is such a place where each Indian truly believes that ,”Saare Jahan Se Achha Hindustan Humara.” “Be proud that you are an Indian, proudly claim I am an INDIAN”, these are the words of Swami Vivekananda. India-my motherland, with its mighty Himalayas looks like a golden bird flying high all above the sky with its cultures, traditions and with many advanced developments in science and technology. I am very proud to be an Indian. I love my country and I want to be the best in the world. I wish that my country should become a great nation with its talent and capability. I have a sweet little dream for my motherland. People in India should be self-sufficient in food for which we have to make the barren lands productive. New varieties of seeds and modern tools should be used for agriculture which is the backbone of Indian economy. The India of my dreams is a corruption-free nation. Beggary should be abolished; government should be people-friendly and citizens should...

Words: 12556 - Pages: 51

Premium Essay

Abcdeskjhjkh

...GRE Analytical Writing ISSUE Essay Topic - 1 "Important truths begin as outrageous, or at least uncomfortable, attacks upon the accepted wisdom of the time." GRE AWA Analytical Writing ISSUE Essay Sample Solution – 1 “The opposite of a correct statement is a false statement. But the opposite of a profound truth may well be another profound truth.” ― Niels Bohr[->0] This is a proven fact that truth is the initial stage of progress. However, it is also believed that truth always starts away from the traditions and conventions. Therefore, people consider truths as attacks upon their beliefs, which people are following from ages. Truth also means some new facts that are unknown to us. People do not want to deviate from the facts, which they have learnt from their ancestors, and it is true to say that shedding ones dogmas is often difficult. They feel that it is an attack on their wisdom. If we look at the history of the world, we will find many examples where truth has generated commotions in the society. Different people have different views about the existence of God, life after death and origin of earth etc. For example, people took a long time to accept that the earth is round. Religious leaders and clergymen opposed this idea as it was against what they were teaching. Similarly, when Polish astronomer, Copernicus discovered that the earth goes round the sun and not vice versa, he was opposed by churches for many years. In fact he and his supporters were...

Words: 150412 - Pages: 602

Free Essay

Psychology

...Advance concept of nursing I Unit 1 Nursing process The nursing process is an organized sequence of problem solving steps used to identify and to manage the health problems of clients .The nursing process is the framework for nursing care in all health care settings.When nursing practice follows the nursing process, clients receive quality care in minimal time with maximal efficiency. The steps of nursing process 1)Assesment 2)Diagnosis 3)Planning 4)Implementation 5)Evaluation Assessment An RN uses a systematic, dynamic way to collect and analyze data about a client, the first step in delivering nursing care. Assessment includes not only physiological data, but also psychological, sociocultural, spiritual, economic, and life-style factors as well. For example, a nurse’s assessment of a hospitalized patient in pain includes not only the physical causes and manifestations of pain, but the patient’s response—an inability to get out of bed, refusal to eat, withdrawal from family members, anger directed at hospital staff, fear, or request for more pain mediation. Diagnosis The nursing diagnosis is the nurse’s clinical judgment about the client’s response to actual or potential health conditions or needs. The diagnosis reflects not only that the patient is in pain, but that the pain has caused other problems such as anxiety, poor nutrition, and conflict within the family, or has the potential to cause complications—for example, respiratory infection is a potential hazard...

Words: 28659 - Pages: 115

Premium Essay

Myths

...Contents Preface Acknowledgments Introduction 1 BRAIN POWER Myth #1 Most People Use Only 10% of Their Brain Power Myth #2 Some People Are Left-Brained, Others Are Right-Brained Myth #3 Extrasensory Perception (ESP) Is a Well-Established Scientific Phenomenon Myth #4 Visual Perceptions Are Accompanied by Tiny Emissions from the Eyes Myth #5 Subliminal Messages Can Persuade People to Purchase Products 2 FROM WOMB TO TOMB Myth #6 Playing Mozart’s Music to Infants Boosts Their Intelligence Myth #7 Adolescence Is Inevitably a Time of Psychological Turmoil Myth #8 Most People Experience a Midlife Crisis in | 8 Their 40s or Early 50s Myth #9 Old Age Is Typically Associated with Increased Dissatisfaction and Senility Myth #10 When Dying, People Pass through a Universal Series of Psychological Stages 3 A REMEMBRANCE OF THINGS PAST Myth #11 Human Memory Works like a Tape Recorder or Video Camera, and Accurate Events We’ve Experienced Myth #12 Hypnosis Is Useful for Retrieving Memories of Forgotten Events Myth #13 Individuals Commonly Repress the Memories of Traumatic Experiences Myth #14 Most People with Amnesia Forget All Details of Their Earlier Lives 4 TEACHING OLD DOGS NEW TRICKS Myth #15 Intelligence (IQ) Tests Are Biased against Certain Groups of People My th #16 If You’re Unsure of Your Answer When Taking a Test, It’s Best to Stick with Your Initial Hunch Myth #17 The Defining Feature of Dyslexia Is Reversing Letters Myth #18 Students Learn Best When Teaching Styles Are Matched to...

Words: 130018 - Pages: 521

Premium Essay

Steel Industry Bdangladesh

...Doing business in Singapore Table 1. Profile of Singapore Name Singapore Geographic location East Asia Current form of state City state with parliamentary democracy Previous form of state British colony (1819±1959) Member of Malaysia (1959±1965) Land area 647.5 sq. km Population 3.04 million (mid-1996 estimate) Population growth (1993±1997) 2% per year Population make-up Chinese (77.3%) (Singapore, as of June 1996) Malay (14.1%) Languages English, Chinese, Malay and Tamil GDP (US$) $94.1 billion (1996) GDP per head (US$) $30 900 (1996) GDP growth (1988±1997) 2.67 times Economic status Newly industrialized economy Type of industrialization Export-oriented Major industries by % of GDP Finance...

Words: 7473 - Pages: 30

Premium Essay

Psychology

...getting married? (p. 27) ❚ Cramming for a test is not more likely to earn you a good grade than spacing your study sessions? (p. 33) Oleg Prikhodko/iStockphoto ❚ ❚ ❚ ❚ ❚ ❚ ❚ ❚ ❚ ❚ B eth, 22, a fourth-year chemistry major, has been accepted into medical school in Boston. She wants to do cancer research, but this goal means another seven or eight years at the grindstone. Kevin, her fiancé, has landed a solid engineering position in Silicon Valley, California. He wants Beth to come with him, take a year to start a family, and then go to medical school in California. But Beth hasn’t applied to medical school in California, and there’s no sure bet that she would “get in” there. If she surrenders her educational opportunity now, another one might not...

Words: 9594 - Pages: 39

Free Essay

Types of Entrepreneurs

...ENTREPRENEURSHIP PROJECT ENTREPRENEURSHIP PROJECT Submitted TO – Ms. Neha BY – Mahima Sharma 50081 Priansha Periwal 50116 BBS 3 HR Submitted TO – Ms. Neha BY – Mahima Sharma 50081 Priansha Periwal 50116 BBS 3 HR CULTURAL DIVERSITY AMONG ENTREPRENEURS CULTURAL DIVERSITY AMONG ENTREPRENEURS Regardless of who you are or what you have been, you can be what you want to be. – W. Clement Stone Regardless of who you are or what you have been, you can be what you want to be. – W. Clement Stone Regardless of who you are or what you have been, you can be what you want to be. – W. Clement Stone ACKNOWLEDGEMENT We owe a great many thanks to a great many people who helped and supported us during the project. The project “CULTURAL DIVERSITY AMONG ENTREPRENEURS” focuses on understanding the diversity that exists among the newly emerged breed of entrepreneurs.We made an effort to understand how people from completely different backgrounds and ways of life, but with a common drive to prove their mettle, end up being their own masters. Our deepest thanks to our college professor, Ms. Neha , who acted as a constant guide and mentor in the process of drafting of this project...

Words: 12184 - Pages: 49

Free Essay

Dasdasdasdsa

...ACT/SAT T EST Preparation and Practice Workbook Grateful acknowledgment is given to authors, publishers, and agents for permission to reprint the following copyrighted material. Every effort has been made to determine copyright owners. In case of any omissions, the Publisher will be pleased to make suitable acknowledgments in future editions. Excerpt from The Mystery of Comets by Fred L. Whipple. Copyright © 1985 by Smithsonian Institution. Reprinted by permission. Excerpt from Freedom’s Children: Young Civil Rights Activists Tell Their Own Stories, by Ellen Levine. Copyright © 1993 by G.P. Putnam’s Sons. Reprinted by permission of Penguin Putnam. Excerpt from New Essays on the Psychology of Art by Rudolf Arnheim. Copyright © 1986, University of California Press. Reprinted by permission. Excerpt from The Natural History of Cats by Claire Necker. Copyright © 1970, A.S. Barnes and Co., Inc. Reprinted by permission. Copyright © by The McGraw-Hill Companies, Inc. All rights reserved. Except as permitted under the United States Copyright Act of 1976, no part of this publication may be reproduced or distributed in any form or by any means, or stored in a database or retrieval system, without prior permission of the publisher. Send all inquiries to: Glencoe/McGraw-Hill 8787 Orion Place Columbus, OH 43240-4027 ISBN-13: 978-0-07-876567-4 ISBN-10: 0-07-876567-6 Printed in the United States of America. 1 2 3 4 5 6 7 8 9 021 12 11 10 09 08 07 06 ACT/SAT Test Preparation and Practice ...

Words: 29346 - Pages: 118

Premium Essay

Level of Political Awareness

...Chapter I The Problem and Its Background Introduction 333 years of Spanish Colonization. 42 years of New Worlds Domination. Almost 3 years of fear made by the Samurai’s aggression. These are mighty periods that strengthen the pillars for the creations a mighty Malayan Empire in the Pacific. Inhabited by different races, a melting pot, Philippines rise from the dust of a monumental failure to a proud-gallant nation. For almost half a century of foreign domination, half century of foreign exploitation, Philippines became a ripe fruit on the Asian Tree. A proud valiant archipelago of grandiose and influences, Philippines became a melting pot, a land where too many different races took part for the development of the land. Strategically located in the heart of the Pacific, Philippines is a stepping stone. Different foreigners will be first to land in the Filipino soil before passing other Asian Countries. Geographically located in the tropic, Philippines is vested by different natural resources. Philippines, a pebble on the shoe of other Great Asian Agricultural Countries, is also a great trading empire; not only in the Asian Trade but also with the International Trade. Known as a nation rich in Tropical Fruits, Philippines showcased her greatness in International Trade as she become leading Banana and Mango exporter in Asia. Also a renowned Rice Bowl of South East Asia, Philippines sheltered the development of world-class agricultural researches that would benefit not only the...

Words: 13252 - Pages: 54

Premium Essay

I Want a Wife

...(Narrative Essay) JUDY BRADY I Want a Wife (1971) Judy Brady’s essay became an instant classic when it appeared in 1971 in the premier issue of the feminist magazine Ms. As you read, analyze the definitions of “husband” and “wife” that Brady uses, and consider why this essay became so powerful in the 1970s. I belong to that classification of people known as wives. I am A Wife. And, not altogether incidentally, I am a mother. Not too long ago a male friend of mine appeared on the scene fresh from a recent divorce. He had one child, who is, of course, with his ex-wife. He is looking for another wife. As I thought about him while I was ironing one evening, it suddenly occurred to me that I, too, would like to have a wife. Why do I want a wife? I would like to go back to school so that I can become economically independent, support myself, and, if need be, support those dependent upon me. I want a wife who will work and send me to school. And while I am going to school I want a wife to take care of my children. I want a wife to keep track of the children’s doctor and dentist appointments. And to keep track of mine, too. I want a wife to make sure my children eat properly and are kept clean. I want a wife who will wash the children’s clothes and keep them mended. I want a wife who is a good nurturant attendant to my children, who arranges for their schooling, makes sure that they have an adequate social life with their peers, takes them to the park, the zoo, etc. I want a...

Words: 7074 - Pages: 29

Premium Essay

Public Speaking Book

...PART 1 • GETTING STARTED 1. Becoming a Public Speaker 2. From A to Z: Overview of a Speech 3. Managing Speech Anxiety 4. Ethical Public Speaking 5. Listeners and Speakers 1 2 8 1 4 23 30 PART 2 • DEVELOPMENT 6. Analyzing the Audience 7. Selecting a Topic and Purpose 8. Developing Supporting Material 9. Locating Supporting Material 10. Doing Effective Internet Research 1 Citing Sources in Your Speech 1. 36 37 49 57 64 73 83 PART 3 • ORGANIZATION 1 Organizing the Speech 2. 1 Selecting an Organizational Pattern 3. 1 Outlining the Speech 4. 92 93 103 1 10 PART 4 • STARTING, FINISHING, AND STYLING 15. Developing the Introduction and Conclusion 16. Using Language 1 22 1 23 1 31 PART 5 • DELIVERY 1 Choosing a Method of Delivery 7. 18. Controlling the Voice 19. Using the Body 1 39 1 40 1 44 1 48 PART 6 • PRESENTATION AIDS 20. Types of Presentation Aids 21. Designing Presentation Aids 22. A Brief Guide to Microsoft PowerPoint 154 155 161 164 PART 7 • TYPES OF SPEECHES 23. Informative Speaking 24. Persuasive Speaking 25. Speaking on Special Occasions 1 74 1 75 188 21 7 PART 8 • THE CLASSROOM AND BEYOND 230 26. Typical Classroom Presentation Formats 27. Science and Mathematics Courses 28. Technical Courses 29. Social Science Courses 30. Arts and Humanities Courses 31. Education Courses 32. Nursing and Allied Health Courses 33. Business Courses and Business Presentations 34. Presenting in Teams 35. Communicating in Groups 231 236 240 243 246 248 25 1 253 258 262 APPENDICES...

Words: 104318 - Pages: 418

Free Essay

Grammar Worksheet

...GLENCOE LANGUAGE ARTS Grammar and Language Workbook G RADE 9 Glencoe/McGraw-Hill Copyright © by The McGraw-Hill Companies, Inc. All rights reserved. Except as permitted under the United States Copyright Act of 1976, no part of this publication may be reproduced or distributed in any form or means, or stored in a database or retrieval system, without the prior written permission of the publisher. Send all inquiries to: Glencoe/McGraw-Hill 936 Eastwind Drive Westerville, Ohio 43081 ISBN 0-02-818294-4 Printed in the United States of America 1 2 3 4 5 6 7 8 9 10 024 03 02 01 00 99 Contents Handbook of Definitions and Rules .........................1 Troubleshooter ........................................................21 Part 1 Grammar ......................................................45 Unit 1 Parts of Speech 1.1 Nouns: Singular, Plural, and Collective ....47 1.2 Nouns: Proper and Common; Concrete and Abstract.................................49 1.3 Pronouns: Personal and Possessive; Reflexive and Intensive...............................51 1.4 Pronouns: Interrogative and Relative; Demonstrative and Indefinite .....................53 1.5 Verbs: Action (Transitive/Intransitive) ......55 1.6 Verbs: Linking .............................................57 1.7 Verb Phrases ................................................59 1.8 Adjectives ....................................................61 1.9 Adverbs........................................................63 1.10 Prepositions...

Words: 107004 - Pages: 429