PT · STRENGTH COACH · GROUP INSTRUCTOR
Show your clients exactly which muscles they’re training — in real time.
FixAxis turns every cue into visible anatomy. Pull up a 3D muscle overlay during a session, demonstrate prime mover vs. synergist roles, and end the “which muscle is this for?” question forever. Built for evidence-based coaches who want their clients to understand the why — not just follow the rep count.
What you'll achieve
Coach with anatomical clarity. Reduce injury risk. Increase client retention through visible progress.
What's holding you back — and how FixAxis fixes it.
We built each solution around the real problems we hear from professionals like you.
Problem 1
Clients can’t “feel the muscle” — mind-muscle connection is missing
Every video shows the active muscle highlighted in 3D. Clients see what should fire — then learn to feel it.
Problem 2
Hard to justify exercise selection to skeptical clients
Each exercise carries prime mover / synergist / stabilizer / antagonist tags from validated kinesiology references (NASM, Human Kinetics).
Problem 3
Common form errors waste session time
Every video has a Common Mistakes section with side-by-side correct vs. wrong form, so clients arrive prepared.
Problem 4
Clients want progressions but the science feels gatekept
Alternative exercises by movement plane, axis, and joint action — generated from our 3,242-exercise biomechanics library.
Tools built for Personal Trainers
3D Anatomy Overlay
Rotate, zoom, and explore which muscles activate — layer-by-layer.
Muscle Role Labels
Prime mover · synergist · stabilizer · antagonist — on every exercise.
Common Mistakes Library
Visual breakdowns of the 3 most-frequent form errors per movement.
Alternative Exercises
Same muscle group, different planes/axes — perfect for working around limitations.
Client-Ready PDFs
Generate session sheets with cues, sets, reps, and anatomy diagrams.
AI Form Coach
Ask Alex or Maya any biomechanical question — cited from peer-reviewed sources.
Start with these workout categories
The numbers you can audit
We don't do vague claims. Here's what backs the platform.
70+ video tutorials with frame-by-frame anatomy overlays
3,242 exercises mapped by joint action, plane, and axis
References from NASM, Human Kinetics, OPEX Fitness, Bret Contreras
New science-backed content every week
From people exactly like you
Verified reviews from personal trainers using FixAxis daily.
“The 3D anatomy overlay changed how I coach. My clients finally understand why we do the cues we do — and they retain form between sessions because they’ve seen the muscle fire.”
Daniel Marquez
NASM-CES Personal Trainer, Madrid
“The Common Mistakes catalog is exactly what I needed for new clients. Side-by-side correct vs. wrong videos cut my form-correction time in half during sessions.”
Yusuf Özkan
Personal Trainer & Strength Coach, Istanbul