Post-injury strength rebuilding
Progressive training for people who have been through traumatic injuries and need a smarter bridge from cleared-to-move into confident, capable strength.
Exercise science for the road back
Rebuild strength after serious injury with a coach who understands the body.
Valhalla Training helps adults — especially those 50 and older — move from fragile, uncertain, or deconditioned into structured strength, mobility, and performance. Programming grounded in exercise science, not guesswork.
Traumatic injury return-to-training
Strength, mobility, conditioning
Peptide education + provider coordination
Allentown, PA · 20-mile radiusIn-person · gym or your homeAdults 50+ focus
Valhalla Awaits
Strength forged carefully after injury.
B.S. Exercise Science · Nutritional Biology
Certified Exercise Physiologist
Certified Personal Trainer
Certified in Peptides & Hormones
Certified TRX Instructor
CPR/AED
Oakland Raiders · Pacific Coast Health Club · SJSU · Lehigh Valley
What Valhalla Training does
Training for the gap after the injury.
A lot of people are told they are “cleared,” but they do not feel ready. Valhalla Training is for that middle space: rebuilding strength, control, conditioning, and confidence with a plan that respects what happened.
Biomechanics-aware coaching
Programming shaped by exercise science, movement quality, mobility, conditioning, and the practical realities of pain, compensation, and rebuilding trust in your body.
Optimization without hype
Nutrition habits, recovery routines, sleep, and peptide education or provider coordination when appropriate — careful, evidence-aware, and never presented as magic.
Method
Progression before intensity.
The goal is not to punish the body into adaptation. It is to restore capacity carefully enough that hard work becomes possible again.
01
Intake and clearance
John starts with injury history, current limitations, training experience, goals, and whether you have been cleared by a physician, surgeon, or physical therapist.
02
Movement baseline
The first work is observation: mobility, control, strength asymmetries, tolerance, and the patterns that need to be respected before intensity increases.
03
Structured progression
Training builds in layers: stability, range, strength, conditioning, body composition, and performance — with progression tied to how you actually respond.
04
Recovery and optimization
Support expands into nutrition, recovery habits, and careful conversations about advanced optimization options that belong under licensed medical supervision.
Peptides & Optimization
Evidence-aware optimization for serious recovery.
John is certified in peptides and hormones. The conversation about optimization is growing — but it belongs in a space between fitness, wellness, and medicine. John helps clients navigate it with grounded education and coordination alongside licensed providers.
If you are curious about peptide protocols, hormone support, or advanced recovery options, this is a place to learn what questions to ask and how to work effectively with the medical provider who manages your care.
These are educational and coordination services only. Peptide and hormone protocols require a licensed medical provider for prescription and administration. Valhalla Training does not prescribe, dispense, or administer any compound.
Recovery
BPC-157 / TB-500
Tissue repair peptides for clients rebuilding from surgery, fracture, ligament damage, or soft-tissue injury. Support healing at the cellular level. Provider prescription and supervision required.
Performance
CJC-1295 (No Dac) / Ipamorelin / Sermorelin
Growth-hormone secretagogue class compounds for body composition, lean muscle support, sleep quality, and recovery. Provider prescription and supervision required.
Hormone Support
Tesamorelin / IGF-1LR3 / GLP Peptides
Growth hormone axis and metabolic support, including Tesamorelin, IGF-1LR3, and GLP-class peptides for energy, body composition, and metabolic function. Provider required.
Anti-Aging
NAD+ / SS31 / Epithalon / MOTS-C
Cellular energy, mitochondrial function, and longevity-class peptides. Supports healthy aging, systemic recovery, and long-term vitality. Provider prescription required.
John Overdorf
Exercise science forged in elite training rooms and personal recovery.
John built Valhalla Training to help adults — especially those 50 and older — improve how the body works, performs, looks, and feels through practical applications of exercise science. His background includes NFL-level strength conditioning, elite athletic facility experience, clinical exercise physiology, and his own story of rebuilding after catastrophic injury.
Before training in the Lehigh Valley, John served as assistant weight coach for the Oakland Raiders and as an exercise physiologist at Pacific Coast Health Club — an elite training facility that worked with Olympic and professional athletes including sprinter Bob Seagren, figure skater Peggy Fleming, and powerlifter Bev Francis.
He brings that depth into every client relationship, paired with certifications in peptides and hormones and a nutritional biology background — and a firsthand understanding of what it takes to rebuild.
Credentials
B.S. Exercise Science · Nutritional Biology
Certified Exercise Physiologist
Certified Personal Trainer
Certified in Peptides & Hormones
Certified TRX Instructor
CPR/AED
Career Highlights
Oakland Raiders
Assistant Weight Coach
NFL-level strength and conditioning programming
Pacific Coast Health Club
Exercise Physiologist
Elite training facility — West Coast Track Club · Bob Seagren · Peggy Fleming · Bev Francis
San Jose State University
Employee Fitness — Exercise Physiologist
4 years of clinical and performance programming
Lehigh Valley & Allentown
Private Trainer · 5+ years
Adults 50+ and traumatic injury recovery specialists
Best fit
Built for people who need a smarter path back.
People cleared after traumatic injury who feel stuck between clinical care and real training
Adults 50+ rebuilding strength, balance, and confidence after the body changed
Former athletes reclaiming performance identity after injury sidelined them
Clients curious about peptides or hormone optimization who want grounded education first
FAQ
Clear boundaries matter.
Is this physical therapy?
No. Valhalla Training is personal training and performance coaching. It can complement the work of a physician or PT, but it does not replace diagnosis, treatment, or clinical care.
Do I need to be cleared before starting?
Yes for serious or traumatic injuries. John needs to know what your medical provider or physical therapist has cleared you to do before programming begins. A signed waiver is also required.
Do you prescribe peptides?
No. Peptides require a licensed medical provider for prescription and administration. Valhalla Training offers education and coordination support — helping clients understand the conversation and work more effectively alongside their prescribing provider.
Where do sessions take place?
John works through a gym and can also train clients at their home within a 20-mile radius of Allentown, PA. All training is in-person — no remote coaching.
What does training cost?
Training is priced at $40–60 per session. A typical program runs three sessions per week. The first step is a consultation to make sure it is a fit before any commitment is made.
Is this only for athletes or young people?
No. John specializes in adults 50 and older and works across many fitness levels. The common thread is rebuilding the body with structure and exercise science rather than guessing.
Start here
Tell John what you are trying to rebuild.
Share the injury context, current limitations, and what “better” would actually mean. If it is a fit, the next step is a grounded conversation about training readiness and goals.
Training:$40–60 / session · 3× per week
Area:Allentown, PA · 20-mile radius · in-person only
Phone:610-972-9713
Training and performance education are not a substitute for medical care. Clients with traumatic injuries should be cleared by their physician, surgeon, or physical therapist before beginning. Peptides and hormone-related protocols require a licensed medical provider.