Who Is This For?
You've been following Layne and want to finally go all-in.
You know the science. Now put it to work with the right tools and a community behind you.
You're curious about Carbon or REPS but haven't pulled the trigger.
This is your chance to try both at a fraction of the cost, with a reason to actually use them.
You train consistently but want structure and accountability.
A 12-week challenge with real stakes gives your routine a purpose beyond just showing up.
You're ready for a change and want a proven path to get there.
No guesswork, no fads. Science-backed tools, a clear program, and a community doing it with you.
What You Get
Carbon Diet Coach // 12 Weeks
Your nutrition, dialed in. Built on the same evidence-based principles Layne coaches, Carbon adjusts your macros weekly based on your progress so you're never guessing what to eat.
*Carbon Diet Coach is a standalone mobile app. You'll receive setup instructions after purchase.
Biolayne Workout Builder // 12 Weeks
50+ science-based training programs with tracking, customization, and hundreds of exercise video demos. Your training, structured and ready to go.
*The Workout Builder is built into Biolayne.com — accessible from any browser.
New Training Programs
Nine training programs built specifically for this challenge, covering both the fat loss and muscle building tracks. Including Layne's exact prep protocol for the 2026 Powerlifting America Classic in Texas.
REPS // 12 Weeks
Monthly research breakdowns that translate the latest science on nutrition, training, and fat loss into takeaways you can actually use. Includes a guide on how to read and interpret research.
Fat Loss Forever eBook
Layne's complete guide to sustainable fat loss: the science, the strategy, and the long game.
Community Access 12 Weeks
Join the private Facebook group to connect with fellow participants, share your progress, ask questions about Workout Builder and Carbon Diet Coach, and interact with Layne throughout the challenge.
Over $155 in tools and resources
Yours for $99.
12 weeks of tools, training, and community
How It Works
Sign Up & Pay
Secure your spot for $99. You'll receive a welcome email with everything you need to get started.
Set Up Your Tools
Activate your Carbon Diet Coach account, set your diet goal, choose your training program in the Workout Builder, and pick your track.
Train & Track for 12 Weeks
Follow your program, dial in your nutrition with Carbon, and connect with the community along the way.
Submit Your Transformation
Take your before and after photos and share your experience in a short written reflection.
Meet Layne Norton, PhD
Layne Norton holds a PhD in Nutritional Sciences with honors from the University of Illinois and a BS in Biochemistry with honors from Eckerd College. His research on protein metabolism and muscle protein synthesis has been published in multiple peer-reviewed journals.
He's also a high-level competitor - a multi-time national powerlifting champion, IPF World Champion, former IPF world record holder in the squat, and a natural pro bodybuilder. He's the founder of Biolayne, co-founder of Carbon Diet Coach and Outwork Nutrition, and the author of Fat Loss Forever, The Complete Contest Prep Guide, and The Complete Reverse Dieting Guide.
You may have seen him on Joe Rogan, Huberman Lab, Diary of a CEO, or Armchair Expert - or heard him on the Dr. Layne Norton Podcast where he cuts through health and fitness misinformation every week.
For the Macros & Muscles challenge, Layne isn't just behind the scenes. He's in the community with you - sharing updates, posting encouragement, and training right alongside you as he preps for his next national competition.
Prizes & Categories
Two categories. Two sets of winners. Here's what's on the line.
Category 1: Fat Loss
Awarded to the participant demonstrating the most impressive fat loss over 12 weeks.
Category 2: Muscle Building
Awarded to the participant demonstrating the most impressive muscle gain over 12 weeks.
Submission Process
Participants will be contacted prior to the conclusion of the challenge to submit their results which includes before and after photos and a short written reflection (up to 250 words) describing your experience.
Grand Prize:
1 hour live call with Layne
1 per category
1 per category
One year Biolayne All Access Subscription
One year Carbon Diet Coach Subscription
Outwork Nutrition Supplement Stack
The Complete Reverse Dieting Guide eBook
The Complete Contest Prep Guide eBook
Real Results. Real People.
Real results from real people who have used Carbon Diet Coach, been coached by Team Biolayne, or follow Biolayne's evidence-based approach - the same tools and methodology built into the Macros & Muscles challenge.
Frequently Asked Questions
Join the Macros & Muscles Challenge
12 weeks. Real tools. Real community. Real prizes. All for $99.
Challenge Starts: May 15, 2026 · Challenge Ends: August 7, 2026
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