Eric's Books
Written to
Inspire Change.
Book #2
The WILDFIT Way
The WILDFIT Way isn't a diet—it's a return to what your body already knows.
Using simple evolutionary principles and real-world coaching, you'll change your relationship with food at the identity level, rebuild trust in your hunger, and make "healthy" feel natural again—without tracking, willpower, or white-knuckling your way through life.
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#WildFitWins
What People Say About WILDFIT
“I can see my clothes are sitting on my body much better. There are curves in the right places. I don't feel uncomfortable sitting at my chair when working from home. I wake up before my alarm, naturally. No sugar cravings after dinner or desire for sugar around 3pm. More stable mood. Face shape is changing.”
Des S David
“Before the program I was 86.9kg and today I am 83.2kg — for me it's such a big win! Haven't seen weight under 85kg for years. Can't wait to see how I'm actually going to look after the program and rest of my life.”
Karina Louisa Puht
“This has been the easiest Spring ever. I've released 7.5 lbs and feel great! I find that I'm thinking more clearly and yes, I am sleeping better. I've even been able to go to a restaurant and stay 100% true to the plan.”
Gylaine Gilmore
“I lost 23 lbs / 10kg, feel more energy, need less time for sleeping, nice skin, self confidence, broke the addiction on chocolate and many more changes in my life.”
Štefi Prchalová
“I lost about 12 lbs, feel great physically and emotionally, and excited about living WildFit!”
Nina Lescher
“I lost 10 pounds, more self confidence, better sleep, smooth skin, proud of myself and many changes for good.”
Lucie Kolaříková
“Body composition is finally in a great place! And the energy and mental clarity I have is amazing, could never have imagined it. Solved much of my procrastination and uncertainty with it. And then of course, the overall food freedom — that really is the greatest feeling!”
Joey Simsen
“I feel great. My body is healthy. My mind is clear. I love the food. I am stoked to eat every day. I walk a lot and feel way more relaxed and grounded and happy! I do not feel the need to overly exercise. I have chosen to accept myself and give myself all the love and all the rest I need.”
Joeke Hoeboer
“My sugar levels are back within target range after they have been off the charts for years. My blood pressure and cholesterol levels are down. I released 22 lbs and counting. I get amazing sleep and I wake up refreshed. My brain fog is gone and I have so much more energy. No more aches and pains. I don't feel like I'm 51, more like 31. I have so much more confidence and I'm ready to take on the world!”
Tara Little
“Hardly any pain in my knee. Much better stamina when walking and hiking. Feel better about myself. Lost 36 pounds.”
Eric Cyprus
Book #1
Postdiabetic: An Easy-to-Follow 9-Week Guide to Reversing Prediabetes and Type 2 Diabetes
★ As seen on Netflix — The Good Doctor
After reversing his own Type 2 diabetes—along with hypertension—and releasing 40 pounds by working with Eric, Dr. Rubén Ruiz teamed up with Eric to translate that real-world transformation into a practical, science-informed roadmap for others. Postdiabetic is an easy-to-implement 9-week guide designed to help you stabilize blood sugar, rebuild metabolic health, and move beyond "management" into true reversal-focused living—with clear steps, simple habits, and sustainable food principles that actually fit real life.
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As Seen On
Netflix's The Good Doctor
Postdiabetic was featured in Season 7 of the critically acclaimed Netflix series The Good Doctor — held on screen by Richard Schiff in a pivotal scene about rethinking how we treat chronic illness. Notably, Richard Schiff himself reversed his own pre-diabetic condition after working with Eric through WildFit.
Pre-Release
Evolution Gap: A Survival Guide for Modern Civilization
Evolutionary mismatch is everywhere—and once you see it, you can't unsee it.
It explains why, in the most advanced era in human history, we're still surrounded by chronic illness, anxiety, burnout, and social breakdown. Eric is a leading voice in this conversation, translating Evolutionary Mismatch Theory into clear, empowering insights—and practical ways to close the "evolution gap" in your health, your mindset, your relationships, and your everyday life.
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Coming Soon
What's Next
Unforgettable
The Art of Commanding Any Room
Built from decades on stages across 65+ countries, Unforgettable is Eric's definitive guide to the craft of communication — not the concept of it. How to hold a room, land a message, and make every word count. Whether you speak to thousands or just want to run a better meeting, this book will change how you show up.
Join the Waiting ListStop It
Breaking the Habits That Are Breaking You
Why do smart people keep doing things they know aren't serving them? Stop It tackles the psychology of habit cessation — why willpower-based approaches fail, and what actually works. Drawing from Eric's Behavior Change Dynamics framework, this book gives you a fundamentally different lens on the patterns quietly eroding your performance, your health, and your life.
Join the Waiting List