In a world inundated with distractions and demands on our time, this groundbreaking work unveils the transformative potential of a simple yet profound concept: the power of 90 minutes.

Stop surviving your days. Start living them.

'A science-based approach for doing your best work without sacrificing your health or wellbeing' NIR EYAL, author of Beyond Belief
'What a great book. Ultraproductive is science-backed, actionable, and genuinely transformative' ALI ABDAAL, author of Feel-Good Productivity

How many notifications do you receive a day? How many news articles do you see? How much of your life is lost to scrolling, swiping and endless updates?

Our work-lives have been turned into boundary-less messes by email and Teams. Because of social media, our personal lives never know peace. We’re all trying to keep up without burning out, and being productive is no longer enough; now, we have to be ‘ultra’. But what if the secret to navigating an increasingly hectic world lies not in doing more, but in doing three things differently?

In Ultraproductive, Eric Partaker and Dr. Christian Poensgen reveal the transformative power of the 90-minute method – a simple, science-backed approach that addresses the three areas that matter most for our productivity and well-being.

Sharper focus: 90 minutes of deep, uninterrupted work each day.
Deeper sleep: 90 minutes of deep sleep each night.
Smarter stress: Reset stress cycles every 90 minutes.

Drawing on cutting-edge research and packed with actionable strategies – from reevaluating your relationship with social media to scheduling ‘ultrafocus’ sessions – Ultraproductive is the essential guide to achieving more without burning out. Its simple framework will help you regain control over your time and attention, restore your energy, and build the resilience to thrive in an overstimulated world.

'Will fundamentally change how you work, rest and lead' VANESSA VAN EDWARDS, author of Cues and Captivate

"Ultraproductive offers practical, science-grounded guidance for protecting what matters most—our health, relationships, and sense of purpose—while still doing excellent work" - Robert Waldinger, Director of Harvard Study of Adult Development & New York Times bestselling author of The Good Life

"What a great book. Ultraproductive is science-backed, actionable, and genuinely transformative" - Ali Abdaal, New York Times bestselling author of Feel-Good Productivity

"A science-based approach for doing your best work without sacrificing your health or wellbeing" - Nir Eyal, New York TImes bestselling author of Beyond Belief

"Ultraproductive is a refreshingly practical and deeply human guide to doing your best work without the exhaustion" - Jenny Wood, New York Times bestselling author of Wild Courage

"This is an advanced class in the science of human performance. Ultraproductive will fundamentally change how you work, rest and lead" - Vanessa Van Edwards, bestselling author of Cues and Captivate

"The Ultraproductive 90-90-90 formula to optimize focus, sleep and stress is a game-changer" - Justin Welsh, writer at The Saturday Solopreneur

"Ultraproductive is a brilliant, science-backed guide to reclaiming your focus, energy and calm" - Chris Bailey, bestselling author of Hyperfocus

"I’m a big fan of Christian’s practical, concise and science-based content on productivity" - Cristian Citu, former Digital Transformation Lead at WEF

"Ultraproductive turns cutting-edge research into practical systems to accomplish more and master stress" - Ben Meer, writer at System Sunday

"This book is priceless. Optimizing focus, sleep and stress the Ultraproductive way is a blueprint for long-term success" - Colby Kultgen, writer at 1% Better

"Ultraproductive is the ultimate how-to for making big things happen in a distracted world" - Chris Donnelly, writer at Step By Step