Biomechanics
You Already Have Enough Exercises, You Just Need Four Ways To Use Each One
From the FASTER syllabus: this article is taught in full in the Movement Trainer (AFT) course, £375 →

In short: FASTER's Movement Trainer course teaches four training qualities, mobility, flexibility, strength and power, and shows that a single exercise like the squat can be built to deliver any one of them by changing only the load, the speed and the hold. The exercise doesn't have to change. The dials do.
The short version
The fear that shows up early in a trainer's career is running out, standing in front of a client with nothing new to give beyond what a first course happened to teach. FASTER's Movement Trainer course answers that with a different skill than collecting more exercises. Every exercise already holds four different jobs inside it, and the trainer decides which one comes out.
Key Takeaways
- Movement Trainer splits training quality into four: mobility, flexibility, strength and power, and any single exercise can be built to train any one of them.
- What decides which one you get is the load, the speed and the hold, never the exercise itself.
- One squat, built four different ways, does four completely different jobs, and the same logic runs on anything in the room.
Four words the industry throws around loosely
Mobility, flexibility, strength and power get used almost as interchangeable praise in most gyms: someone's "strong", someone's "mobile", as if each is a fixed trait rather than something you build on purpose. FASTER treats them as four separate outcomes, each with its own recipe, and the recipe is the same three ingredients every time: how much load, how fast, and whether you hold.
The same squat, four different jobs
Take one exercise and run it four ways:
- Mobility squat: light load, slow speed, an extended hold at the bottom.
- Flexibility squat: no load at all, end range with the hands straight in the air, often used as an assessment rather than a set.
- Strength squat: heavy load, a slow ascent and descent, no hold at the bottom.
- Power squat: moderate load, fast and explosive on the way up, no hold.
Same feet, same joints, same basic shape. Four different training effects, built by what happens to load, speed and hold around it.
Why this matters more than another exercise would
A trainer who only knows more exercises still runs into the same wall eventually: the client's needs change faster than any list can keep up. A trainer who understands the four qualities never runs into that wall, because the exercise bank they already have becomes four times deeper without a single new movement added to it.
It runs on anything, not just the squat
The same three dials, load, speed and hold, work on a lunge, a press, a hinge, anything with a clear start and end position. Learn the pattern once on a squat and it travels with a trainer into every session after it.
Where this comes from
This is straight out of Module 2 of our Movement Trainer course, the module built to end the feeling of running dry with a client, and it's also where the full programme builder inside PT Manager opens once a trainer passes.
What to do next
Four ways to use one exercise is the start of a much bigger toolkit. The Movement Trainer course covers the rest of it, load, speed, hold and the degrees of freedom that sit behind them, for £375, taught by the people who wrote it.
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the Movement Trainer (AFT) course, £375 — taught by the people who wrote it, with free return access for life. The price is on the page, payment plans at checkout, no sales calls.
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See what the course covers →Frequently asked
Do I need four different exercises to train mobility, flexibility, strength and power?
No. One exercise built four different ways covers all four, since the quality trained comes from the load, the speed and the hold, not from swapping the movement.
Does this replace knowing lots of exercises?
It changes what the exercise bank is for. Instead of memorising more movements, a trainer learns to rebuild the ones they already have for whatever the client in front of them needs that day.
Does finishing Movement Trainer unlock anything in PT Manager?
Yes. It opens the full programme builder inside PT Manager, so the exercises built this way can be saved straight into a client's programme.
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