05The man behind the engine

Hi — I'm Maddy.

NASM-Certified Personal Trainer. Certified Sports Nutritionist. Builder of the first deterministic fitness engine. Coach to 2,400+ active clients across India, UAE, UK, US, and Canada. I read every Body-ID personally.

NASM
Certified PT
CSN
Sports Nutritionist
2.08M
IG following
2,400+
Active clients
Maddy — NASM-certified personal trainer and founder of FitnessByMaddy
Engineered, not entertainment.

Why I built a deterministic engine.

Every fitness app I tried put me in the same bucket as 600 million people. I knew my body wasn't a bucket. I built the engine I wished existed.

2014 · day zero
Started coaching one client at a time — every plan hand-built, no templates. Six clients in the first six months.
2017 · the math
Crossed 200 clients. Realised templates would have made it 10× easier — and 10× worse. The moment you template, you average.
2020 · NASM-CPT
Locked in NASM Personal Trainer + Certified Sports Nutritionist credentials. Doubled down on hand-built plans.
2023 · the engine
First deterministic prototype shipped. 9 axes · 27 levels · 14,348,907 profiles. Same inputs always give the same plan. Not AI. Not templates. Math.
2026 · today
2,400+ active clients across India, UAE, UK, US, Canada · 2.08M IG followers · every plan still personally built. The engine just made me 100× faster at reading the body.

I started coaching one client at a time. Each plan was hand-built — read their body, their constraints, their life — design accordingly. Six clients turned to sixty. Sixty turned to two thousand. Templates would have been easier. I refused.

Because the moment you template, you average. The moment you average, you stop seeing the person in front of you. And fitness is not a math of averages — it's a math of this body, today, in this life.

So I built an engine that does what I do mentally — but at scale. 15 inputs. 9 axes. 14,348,907 profiles. Same answers always give the same diagnostic. The diagnostic feeds my hand. I still build every plan personally — the engine just makes me 100× faster at reading the body.

"The body you have is not the body anyone else has. The plan you train on shouldn't be either."

— Maddy · founder · FitnessByMaddy · NASM-CPT · CSN
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A few of the 2,400+.

Not before-after porn. Real clients · real profiles · real plans. Engineered, not entertainment.

Client transformation
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16 of 2,400+Each one a different cell · each one a different plan · all hand-built by Maddy.

What you'll get with me.

Three things that don't exist anywhere else in the industry — at any price.

01

Personal read

I read your Body-ID + diagnostic personally. No "intake-team", no junior coach, no AI agent. Your archetype lands on my desk.

Within 12 hrs · WhatsApp
02

Plan built by hand

Every set, rep, load, meal — designed for your profile. Not picked from a database. Not generated by AI. The engine accelerates me — it doesn't replace me.

Hand-built · Re-derive every cycle
03

Direct access

WhatsApp open daily. Form videos reviewed within 24h. I read every message myself. No bots. No "support team". No queue.

7 days a week · Same time zone

The whole point of FBM Built by Maddy. Not licensed. Not sold to a "team". Not outsourced. Every plan that leaves the engine carries my hand on it. If it doesn't, it's not from FBM.

Let's get to work.

Find your Body-ID — I'll read it personally and we'll choose the path together. ~3 min · free · no commitment.

Find Your Body-ID → I read every Body-ID personally · ~3 min · free