Stop guessing. Get UnderForge®

Premium muscle and strength building coaching.
Delivered by humans, improved with AI.

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Results in 6 weeks

You're not lazy.
You're just missing a system.

Contradictory advice from every source

One systematic, evidence-based approach

Personal coaches are too expensive

Evidence-based guidance at a fraction of the cost

Eating 'lots of protein' but no real plan

Optimized nutrition timing for your metabolism

Starting strong, then losing momentum

Built-in accountability that keeps you honest

A unique approach for your unique body and goals

STEP 01

We get to know each other

Understand your goals, lifestyle, and what's held you back before.

STEP 02

Onboard through our app

Designed exclusively to help people gain strength or muscle mass.

STEP 03

Follow your personalized plan

Nutrition, training and recovery built around your body and schedule.

STEP 04

Touchpoints with your coach

Regular check-ins to review your plan, progress, and adjust as needed.

Learn more about the app

From skeptics to believers

"Finally, someone who explains the 'why' behind every recommendation. I've tried 5 different programs—this is the first one that actually made sense."

Marcus K.

Consultant, 34

+8kg lean mass

"Very quickly I understood that I had been missing deeper clarity on how to train for glute gains."

Dana M., 27

Fitness Enthusiast

Visible glute transformation

"I was skeptical at first—I thought I knew enough. Turns out I was leaving so much on the table with nutrition timing alone."

David R.

Entrepreneur, 38

22% → 15% body fat

MEET YOUR COACHES

Science and results without the jargon

Alonso Prieto

10+ years calisthenics & gym, entrepreneur, human flag holder.
Discipline. Systems. Results. Let's build something extraordinary.

Ready to forge
your best self?

We're taking 20 clients for our Late January 2026 cohort.
Only 11 places left.