Copyright © 2008 by John J. Ratey, MD

All rights reserved. Except as permitted under the U.S. Copyright Act of 1976, no part of this publication may be reproduced, distributed, or transmitted in any form or by any means, or stored in a database or retrieval system, without the prior written permission of the publisher.

Little, Brown and Company

Hachette Book Group

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First eBook Edition: January 2008

The exercise program and other information contained in this book should not be followed without first consulting your health care professional.

The information contained in this book is based on sources that the authors believe to be reliable. See www.johnratey.com for source information.

ISBN: 978-0-316-02835-6