Aligned

The Data-Driven Guide to Performance, Recovery, and Human Potential

From the Global Head of Human Performance at WHOOP, a data-powered guide to human potential, revealing that recovery is the hidden driver of peak performance

We often equate peak performance with relentless effort—early mornings, intense workouts, and unwavering discipline. But what if the true catalyst for excellence lies not in exertion, but in restoration? Pulling from one of the world’s largest physiological datasets and more than two decades of experience operating in high-stakes, high-stress environments, Holmes makes a compelling case: your downtime is your competitive advantage. 

Dr. Kristen Holmes, psychophysiologist and Global Head of Human Performance at WHOOP, challenges conventional wisdom by revealing that recovery is not a luxury—it's a necessity. She demonstrates that aligning with our body's natural rhythms is the key to unlocking sustained vitality and presence, and bridges the gap between cutting-edge science and practical application. You’ll discover how to: 

  • Align with your biological rhythms: Learn how circadian alignment affects hormonal health, cognitive function, sleep quality, and emotional well-being, and how to synchronize your daily routines and live with more joy and energy.
  • Decode the science of recovery: Understand why recovery isn't a luxury but a necessity, and how metrics like Heart Rate Variability (HRV) and sleep consistency are critical indicators of resilience and readiness.
  • Translate data into action: Transform complex biometric data into daily rituals that reinforce your desired identity and support continuous growth.
  • Shape your emotional resilience: Explore Dr. Holmes's innovative frameworks—HEAL (Heart, Energy, Autonomy, Love), TEAM (Time, Expectations, Attachments, Memory), and PEAC (Purpose, Efficacy, Autonomy, Connection)—each offering a unique lens to understand and shape your internal narratives and overall well-being.

Whether you're an elite athlete, a corporate leader, or someone seeking deeper meaning in your life, Aligned serves as a field guide to living at full capacity, in tune with both body and mind.
Aligned makes a convincing case for recovery as the foundation of performance. Dr. Holmes shows how recovery and emotional resilience improve when we work with the body’s natural circadian rhythms, rather than against them. The result is a book that feels both rigorous and genuinely useful.”—Michael J. Breus, PhD, ABSM, author of The Power of When

"In a world that rewards urgency and exhaustion, Aligned offers permission to slow down and live with intention. Holmes guides each of us to listen more deeply, to our bodies, our rhythms, and, most importantly, our values, and to live from that place of awareness. This book is, refreshingly, not about optimization or achievement, it’s about wholeness."—David Perlmutter, MD, New York Times bestselling author of Grain Brain and Brain Defenders

"Dr. Holmes has written an incredible book that revitalizes the human body and the human spirit. I am thrilled to have her scientific expertise and decades of experience at my fingertips. A must-read for anyone looking to become the most exceptional version of themselves."—Dr. Gabrielle Lyon, New York Times bestselling author of Forever Strong and The Forever Strong Playbook

"Dr. Holmes bridges something that is rare in the performance world—deep scientific rigor and real coaching experience in high-stakes environments. In Aligned, she shows that sustainable performance isn’t about hype or hacks, but about understanding your physiology, respecting recovery, and building daily habits that compound over time. A practical, science-backed guide for anyone serious about building resilience and sustaining full-body health over the long haul."—Dr. Kelly Starrett, New York Times bestselling author and co-founder of The Ready State

"We often think of performance only in terms of what our physical body is capable of. The reality is, our body, mind, and spirit are an interconnected ecosystem of balance, stress, and recovery. As an elite sports surgeon, I've seen this ecosystem become dysfunctional when not aligned. In her brilliant book, Aligned, Dr. Kristen Holmes brings us a data-centered approach to total alignment for performance in sports, work, and relationships. Her knowledge and warmth shine through the pages, as if you are sitting across from her in marvelous conversation."—Vonda Wright, MD, MS, orthopaedic surgeon and author of New York Times bestseller Unbreakable

Aligned is a must-read for anyone who wants to achieve big goals in their life — by harnessing the biology of resilience, stress, and readiness. This is the roadmap for how to outperform yourself.”— William W. Li, MD New York Times bestselling author of Eat To Beat Disease and Eat To Beat Your Diet, President and Medical Director, the Angiogenesis Foundation

"Kristen Holmes has spent her life studying how humans can show up every day and compete at the highest level. Her championship resume as an athlete and coach at Princeton created an incredible foundation for her work as a scientist. Aligned offers a core truth: The highest level of excellence can only be accomplished one way, through total alignment—heart, mind, and body—so you can live out your deepest values with joy and energy."—Jim Murphy, author of Inner Excellence

“Dr. Holmes has a unique ability to turn complex science into simple truths that change how you live and perform. At WHOOP, we’ve seen firsthand how her work helps people stop guessing and start listening to their bodies. Aligned brings that to life. She shows that real performance isn’t about pushing harder, it’s about working in sync with yourself. I have worked with Dr. Holmes everyday for the past decade and she embodies the message she preaches.” —Will Ahmed, Founder & CEO, WHOOP
Dr. Kristen Holmes is the Global Head of Human Performance and Principal Scientist at WHOOP, where she leads pioneering research on the interplay between physiological metrics and behavioral patterns. A 2-sport athlete in the Big Ten, former 7-year member of the U.S. National Field Hockey Team and one of the most successful coaches in Ivy League history, business owner and innovator she brings a unique blend of elite athletic and business experience as well as scientific acumen. Holmes holds a Ph.D. in Psychology from the University of Queensland and has dedicated her career to translating complex data into actionable insights, empowering individuals to achieve their potential through alignment and recovery. View titles by Kristen Holmes, PhD

About

From the Global Head of Human Performance at WHOOP, a data-powered guide to human potential, revealing that recovery is the hidden driver of peak performance

We often equate peak performance with relentless effort—early mornings, intense workouts, and unwavering discipline. But what if the true catalyst for excellence lies not in exertion, but in restoration? Pulling from one of the world’s largest physiological datasets and more than two decades of experience operating in high-stakes, high-stress environments, Holmes makes a compelling case: your downtime is your competitive advantage. 

Dr. Kristen Holmes, psychophysiologist and Global Head of Human Performance at WHOOP, challenges conventional wisdom by revealing that recovery is not a luxury—it's a necessity. She demonstrates that aligning with our body's natural rhythms is the key to unlocking sustained vitality and presence, and bridges the gap between cutting-edge science and practical application. You’ll discover how to: 

  • Align with your biological rhythms: Learn how circadian alignment affects hormonal health, cognitive function, sleep quality, and emotional well-being, and how to synchronize your daily routines and live with more joy and energy.
  • Decode the science of recovery: Understand why recovery isn't a luxury but a necessity, and how metrics like Heart Rate Variability (HRV) and sleep consistency are critical indicators of resilience and readiness.
  • Translate data into action: Transform complex biometric data into daily rituals that reinforce your desired identity and support continuous growth.
  • Shape your emotional resilience: Explore Dr. Holmes's innovative frameworks—HEAL (Heart, Energy, Autonomy, Love), TEAM (Time, Expectations, Attachments, Memory), and PEAC (Purpose, Efficacy, Autonomy, Connection)—each offering a unique lens to understand and shape your internal narratives and overall well-being.

Whether you're an elite athlete, a corporate leader, or someone seeking deeper meaning in your life, Aligned serves as a field guide to living at full capacity, in tune with both body and mind.

Reviews

Aligned makes a convincing case for recovery as the foundation of performance. Dr. Holmes shows how recovery and emotional resilience improve when we work with the body’s natural circadian rhythms, rather than against them. The result is a book that feels both rigorous and genuinely useful.”—Michael J. Breus, PhD, ABSM, author of The Power of When

"In a world that rewards urgency and exhaustion, Aligned offers permission to slow down and live with intention. Holmes guides each of us to listen more deeply, to our bodies, our rhythms, and, most importantly, our values, and to live from that place of awareness. This book is, refreshingly, not about optimization or achievement, it’s about wholeness."—David Perlmutter, MD, New York Times bestselling author of Grain Brain and Brain Defenders

"Dr. Holmes has written an incredible book that revitalizes the human body and the human spirit. I am thrilled to have her scientific expertise and decades of experience at my fingertips. A must-read for anyone looking to become the most exceptional version of themselves."—Dr. Gabrielle Lyon, New York Times bestselling author of Forever Strong and The Forever Strong Playbook

"Dr. Holmes bridges something that is rare in the performance world—deep scientific rigor and real coaching experience in high-stakes environments. In Aligned, she shows that sustainable performance isn’t about hype or hacks, but about understanding your physiology, respecting recovery, and building daily habits that compound over time. A practical, science-backed guide for anyone serious about building resilience and sustaining full-body health over the long haul."—Dr. Kelly Starrett, New York Times bestselling author and co-founder of The Ready State

"We often think of performance only in terms of what our physical body is capable of. The reality is, our body, mind, and spirit are an interconnected ecosystem of balance, stress, and recovery. As an elite sports surgeon, I've seen this ecosystem become dysfunctional when not aligned. In her brilliant book, Aligned, Dr. Kristen Holmes brings us a data-centered approach to total alignment for performance in sports, work, and relationships. Her knowledge and warmth shine through the pages, as if you are sitting across from her in marvelous conversation."—Vonda Wright, MD, MS, orthopaedic surgeon and author of New York Times bestseller Unbreakable

Aligned is a must-read for anyone who wants to achieve big goals in their life — by harnessing the biology of resilience, stress, and readiness. This is the roadmap for how to outperform yourself.”— William W. Li, MD New York Times bestselling author of Eat To Beat Disease and Eat To Beat Your Diet, President and Medical Director, the Angiogenesis Foundation

"Kristen Holmes has spent her life studying how humans can show up every day and compete at the highest level. Her championship resume as an athlete and coach at Princeton created an incredible foundation for her work as a scientist. Aligned offers a core truth: The highest level of excellence can only be accomplished one way, through total alignment—heart, mind, and body—so you can live out your deepest values with joy and energy."—Jim Murphy, author of Inner Excellence

“Dr. Holmes has a unique ability to turn complex science into simple truths that change how you live and perform. At WHOOP, we’ve seen firsthand how her work helps people stop guessing and start listening to their bodies. Aligned brings that to life. She shows that real performance isn’t about pushing harder, it’s about working in sync with yourself. I have worked with Dr. Holmes everyday for the past decade and she embodies the message she preaches.” —Will Ahmed, Founder & CEO, WHOOP

Author

Dr. Kristen Holmes is the Global Head of Human Performance and Principal Scientist at WHOOP, where she leads pioneering research on the interplay between physiological metrics and behavioral patterns. A 2-sport athlete in the Big Ten, former 7-year member of the U.S. National Field Hockey Team and one of the most successful coaches in Ivy League history, business owner and innovator she brings a unique blend of elite athletic and business experience as well as scientific acumen. Holmes holds a Ph.D. in Psychology from the University of Queensland and has dedicated her career to translating complex data into actionable insights, empowering individuals to achieve their potential through alignment and recovery. View titles by Kristen Holmes, PhD
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