Email Novel Suspects Logo
Hachette provides comprehensive global distribution services in the following territories:
United States flag Switch to United States region United Kingdom flag Switch to United Kingdom region Australia flag Switch to Australia region India flag Switch to India region

Hachette Book Group menu

  • Home
  • Publishers
  • Customers
  • Sustainability
  • Retailer Portal
  • Location
  • Our Culture
  • Our Careers
Go to Hachette Book Group home

Hachette Book Group menu

  • Home
  • Publishers
  • Customers
  • Sustainability
  • Retailer Portal
  • Location
  • Our Culture
  • Our Careers

By clicking “Accept,” you agree to the use of cookies and similar technologies on your device as set forth in our Cookie Policy and our Privacy Policy. Please note that certain cookies are essential for this website to function properly and do not require user consent to be deployed.

The Power of When

Discover Your Chronotype--and Learn the Best Time to Eat Lunch, Ask for a Raise, Have Sex, Write a Novel, Take Your Meds, and More

The Power of When Open the full-size image

Loading

Contributors

Foreword by Mehmet C. Oz, MD

By Michael Breus, PhD

Formats and Prices

On Sale
Mar 19, 2019
Page Count
384 pages
Publisher
Little Brown Spark
ISBN-13
9780316391252

Price

$18.99

Price

$23.99 CAD

Format

  1. ebook
  2. Hardcover (Large Print)
  3. Audiobook Download (Unabridged)

Format:

  1. Trade Paperback $18.99 $23.99 CAD
  2. ebook $11.99 $15.99 CAD
  3. Hardcover (Large Print) $45.00 $57.00 CAD
  4. Audiobook Download (Unabridged)

Buy from Other Retailers:

  • Amazon
  • Barnes & Noble
  • Books-A-Million
  • Bookshop
  • Target
  • Walmart

Learn the best time to do everything — from drink your coffee to have sex or go for a run — according to your body’s chronotype.

Most advice centers on what to do, or how to do it, and ignores the when of success. But exciting new research proves there is a right time to do just about everything, based on our biology and hormones.

As Dr. Michael Breus proves in The Power Of When, working with your body’s inner clock for maximum health, happiness, and productivity is easy, exciting, and fun. The Power Of When presents a groundbreaking program for getting back in sync with your natural rhythm by making minor changes to your daily routine.

After you’ve taken Dr. Breus’s comprehensive Bio-Time Quiz to figure out your chronotype (are you a Bear, Lion, Dolphin or Wolf?), you’ll find out the best time to do over 50 different activities. Featuring a foreword by Mehmet C. Oz, MD, and packed with fascinating facts, fun personality quizzes, and easy-to-follow guidelines, The Power Of When is the ultimate “lifehack” to help you achieve your goals.

Genre:

  • Mind, Body, Spirit
  • Self-help
  • Self-management
  • Time Management

Michael J. Breus, PhD, is a Clinical Psychologist and both a Diplomate of the American Board of Sleep Medicine and a Fellow of The American Academy of Sleep Medicine. Dr. Breus has been featured on The Dr. Oz Show more than 30 times and writes regularly for The Huffington Post, The Dr. Oz Blog, and Psychology Today. He is the author of The Sleep Doctor's Diet Plan and Beauty Sleep.

  • "The Power of When prepares you to take full advantage of our adaptation to the rhythms of nature. After reading this book, your decision-making ability will forever be improved. This is a new horizon in our understanding of human behavior, and Michael Breus masterfully presents the science as a recipe for self-improvement."
    David Perlmutter, MD, author of Grain Brain and Brain Maker
  • "Dr. Breus has succeeded in making the complex science of chronobiology accessible and engaging for all readers. Whether you're looking to improve your relationships, get a raise at work, or simply lead a more fulfilling life, THE POWER OF WHEN is the guidebook you've been waiting for."
    Mark Hyman, MD, Director, Cleveland Clinic Center for Functional Medicine

You May Also Like

All Good Things Are Wild and Free Daily Tracker
All Good Things Are Wild and Free Daily Tracker $12.95 $17.95 CAD
The 100-Day Goal Journal
The 100-Day Goal Journal $19.99 $25.99 CAD
Organize Tomorrow Today
Organize Tomorrow Today $18.99 $24.99 CAD
The Power of Less
The Power of Less $33.00 $42.00 CAD
Procrastination
Procrastination $19.99 $25.99 CAD

Newsletter Signup

Get recommended reads, deals, and more from Hachette

By clicking ‘Sign Up,’ I acknowledge that I have read and agree to Hachette Book Group’s Privacy Policy and Terms of Use

Michael Breus, PhD

About the Author

Michael J. Breus, PhD, is a double-boarded clinical psychologist and clinical sleep specialist. He is the author of numerous bestselling books, including The Power of When, The Sleep Doctor’s Diet Plan, and Beauty Sleep, and the coauthor of Energize! He has a concierge sleep practice in Los Angeles.

Learn more about this author

▲
HBG Distribution logo
  • FAQ
  • Vendors
  • Cookie Policy
  • Report Piracy
  • Fraud Alert
  • CPSIA
  • GPSR
© 2025 Hachette Book Group | Terms of Use | Privacy Policy | Contact Us | Do Not Sell My Personal Information