Stop Guessing. Start Learning From People Who've Actually Been In The Arena.
Underground Athletes University gives you structured education in training, nutrition, mindset, and performance — built from decades of elite coaching, IFBB champion experience, and medical wellness expertise.
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4.9/5 star reviews
Trusted by athletes, coaches, parents, and everyday learners
Does this sound like you?
YOU'RE TIRED OF:
You're surrounded by fitness advice but don't know who to trust
You've tried programs before but still feel like you're guessing
You want to understand training, not just follow workouts
You get motivated for a few weeks, then lose structure
You fix one area — training, nutrition, or mindset — but another holds you back
YOU'RE READY FOR:
You have structured education from coaches who've lived it
You finally have a clear path built on wisdom, not hype
You understand why you're doing what you're doing
You build discipline that doesn't depend on motivation
You have a complete education across training, nutrition, and mindset
Here's what makes Underground Athletes University different
Expert-Led Digital Manuals
IFBB Champion & Medical Credentials
Structured Learning Paths
Mobile-Friendly Access
Account-Based Login Access
Training Vault Bonus Included
Physician-Guided Telehealth Programs
Personalized Treatment Planning
TESTIMONIALS
What our students are saying...
“I've followed fitness influencers for years and always felt like I was piecing things together. Underground Athletes University actually teaches you why things work. This is the education I didn't know I needed.”
— Marcus T.
Fitness Enthusiast
“As a coach, I'm always looking for credible resources to share with my athletes. The level of experience behind these manuals is unmatched. Mandus and the team have built something genuinely valuable.”
— Coach Denise R.
Personal Trainer
“I'm over 40 and felt like most fitness content wasn't built for where I am now. The 40+ Masters book finally gave me practical guidance that makes sense for my stage of life.”
— Robert A.
Adult Athlete
THE Manuals
7 Manuals. One Complete Education.
1
1. Training Manual
Training Manual
Master the fundamentals of structured training. Learn how to build strength, develop a program, and train with purpose instead of guessing every session.
2. Nutrition Manual
2
Nutrition Manual
Learn how food fuels performance and recovery. Practical, no-fluff guidance built around real-world nutrition principles you can apply immediately.
3
3. Mindset of a Champion
Mindset of a Champion
Build the mental discipline that separates those who follow through from those who quit when it gets hard. Learn how champions think, execute, and stay consistent.
4
4. 40+ Masters Manual
40+ Masters Manual
Training and performance education built specifically for adults who want to train smart, recover well, and keep improving at their current stage of life.
5
5. Food Guide
Food Guide
A practical daily reference for food choices, meal structure, and fueling your training and lifestyle without overcomplicating nutrition.
6
6. Youth Manual
Youth Manual
Responsible, coach-informed education for youth athletes and the parents and coaches who guide them. Includes 35 short support videos under 2 minutes each.
7
7. Title Placeholder
Title Placeholder
Build the mental discipline that separates those who follow through from those who quit when it gets hard. Learn how champions think, execute, and stay consistent.
Bundle Options
Bundle
Includes
Price
Bundle
Individual Book
Includes
Any single book
Price
$149.99
Bundle
Performance Essentials Bundle
Includes
3 books + 2 months Training Vault
Price
$359
Bundle
High Performance Bundle
Includes
5 books + 3 months Training Vault
Price
$549
Bundle
Full UAU Library
Includes
All 7 books + 6 months Training Vault
Price
$699
Individual Manual
Any single manual
$149.99
Performance Essentials Bundle
3 manuals
$359
High Performance Bundle
5 manuals
$549
Full UAU Library
All 7 manuals
$699
UAU TELEHEALTH PROGRAMS
Physician-Guided Programs Built for Performance, Recovery & Longevity
Underground Athletes University now offers telehealth programs designed to support your body from the inside out — through personalized, physician-guided care plans tailored to your goals.
$249/month
Weight Loss & Metabolic Optimization
Personalized physician-guided metabolic optimization program designed to support healthy weight management, appetite control, and improved body composition.
Potential therapies include: Tirzepatide, Semaglutide, Retatrutide (where appropriate), Vitamin B12 support.
$229/month
Recovery & Injury Support
Designed for active individuals seeking support for recovery, mobility, training, and overall wellness. Built around therapies that support tissue repair and performance longevity. Potential therapies include: BPC-157, TB-500, KPV, GHK-Cu.
$249/month
Longevity & Performance
Focused on healthy aging, vitality, recovery, and performance optimization for individuals who want to keep performing at a high level for the long term. Potential therapies include: CJC-1295, Ipamorelin, Sermorelin, Tesamorelin (where appropriate), NAD support.
$249/month
Men's Vitality Program
Designed to support hormonal health, vitality, and reproductive wellness through individualized care and physician-guided treatment planning.
Potential therapies include: Kisspeptin, Gonadorelin, Enclomiphene, HCG (where appropriate).
$199/month management fee (medication billed separately)
Hormone Optimization (TRT)
Comprehensive hormone optimization program for qualified individuals. Includes initial consultation, follow-up appointments, lab review, and prescription management following clinical evaluation and laboratory review.
How It Works
1
Complete your online application
2
Medical questionnaire reviewed by our provider
3
Schedule your telehealth consultation
4
Provider evaluation completed
5
Labs ordered if indicated
6
Personalized treatment plan developed
7
Prescription sent to licensed pharmacy if medically appropriate
Disclaimer: All therapies require evaluation by a licensed healthcare provider. Prescription medications and compounded therapies are provided only when clinically appropriate. Results vary among individuals. No treatment offered is intended to diagnose, cure, treat, or prevent disease without proper medical evaluation. Applicants with certain medical conditions may not qualify.
Here's What You Get:
Instant digital access to your chosen manual or bundle
Account-based login — no hunting through email for PDFs
Mobile-friendly format — learn anywhere, anytime
Youth manual includes 35 short support videos
Education from Mandus Buckle, Dr. Dejuan Springer & Professor George Brown
Access to physician-guided telehealth programs
“Best investment I've made in my education as an athlete.”
4.9/5 star reviews
Offer
Price
Individual Manual
$149.99
Performance Essentials Bundle
$359
High Performance Bundle
$549
Full UAU Library
$699
Telehealth Programs
Starting at $199/month
MEET YOUR INSTRUCTORS
Meet the Team Behind Underground Athletes University
Mandus Buckle
Founder, Chancellor & Head Coach
Decades of experience as a lifelong athlete, coach, sports reporter, entrepreneur, bodybuilding judge, and Olympia Champion Coach. Connected to over 50 Pro Card wins and professional bodybuilding victories across five divisions, with experience coaching NFL personnel and Special Ops Military. Mandus built Underground Athletes University to pass down the wisdom that only comes from a lifetime in the arena.
Dr. Dejuan Springer
Medical & Wellness Professor
Integrative Naturopathic Medical Physician, professor at the University of New Mexico, television wellness host, clinic founder, and IFBB Professional Men's Physique bodybuilder. Dr. Springer brings the perspective of a physician and educator who understands both the science and the performance side of health — and leads the UAU Telehealth program.
Professor George Brown
Champion Performance Educator
20x IFBB Champion, 2x New York Pro winner, 5x Top 5 Arnold finisher, 7x Top 10 Olympia finisher, 9x Olympian, bodybuilding judge, and media influencer. Professor Brown brings champion-level discipline, mindset, and performance knowledge to every manual and program he contributes to.
WHO IS THIS FOR…
🏋️ Fitness Enthusiasts wanting real education
🎽 Athletes & Competitors leveling up
👨👩👧 Parents & Youth Coaches
💪 Adults 40+ training smarter
🧠 Coaches & Trainers
🪖 Military & First Responders
🧬 Recovery, metabolic & hormone support seekers
📚 Lifelong Learners
Frequently Asked Questions
Is this only for bodybuilders or advanced athletes?
Not at all. While the team has elite-level credentials, the education is built for everyday learners, coaches, parents, adults over 40, and anyone committed to becoming stronger physically and mentally.
How do I access the manuals after I purchase?
Your manuals are delivered through your own account login — no digging through email for PDFs. Everything is organized in one place and formatted to read well on mobile.
Should I buy one manual or a bundle?
One manual is a great starting point if you have one specific goal. If you want a more complete education across training, nutrition, mindset, and performance, the bundles offer better coverage and better value.
What happens after I buy?
You get immediate access through your login.
How do the Telehealth Programs work?
You start by completing an online application and medical questionnaire. From there, you'll schedule a telehealth consultation with our provider, who will evaluate your goals and health history. If appropriate, a personalized treatment plan and prescription will be developed for you.
Do I qualify for the Telehealth Programs?
Qualification is determined after a medical evaluation. Certain conditions may affect eligibility. All therapies are prescribed only when clinically appropriate by a licensed healthcare provider.
Why is each manual $149.99?
These are not generic manuals. Each manual is built from decades of coaching, competition, medical insight, and real-world performance experience. The value is the time, guesswork, and mistakes it can help you avoid.
Start Learning From People Who've Lived It.
Join Underground Athletes University today and stop guessing about your training, nutrition, and performance.
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