Jason X Road Get tester access
Hi, I'm Jason

I built this body from the worst starting point I could have asked for.

Narrow shoulders, long limbs, wrists you can wrap two fingers around, and strength that started at zero.

Me at fifteen, before any of it
What this is

The Zero-to-One Handbook

I took the whole process — learning, training, eating, tracking, adjusting — and turned it into a system. You run it with your own numbers, and build the training and diet around you.

You probably want my plan. I'd hand it over, but it wouldn't work on you — it was built on my body, my schedule, and ten years of adjusting. What you need is your own. This is how you build it.

The handbook is the starting point. You open it next to any free AI chat — ChatGPT, Claude, Gemini — and paste in the questions in the order they're given. By the end you have a coach that knows your body, your schedule and what you're working with, and tells you what to eat, what to lift, and when. There's an app that runs the day-to-day if you want it. You don't need it to start.

No gym experience needed. No subscription. An afternoon to set up — you follow it, you don't read it cover to cover — and it's yours to keep.

The Zero-to-One Handbook cover
The Zero-to-One Handbook
149 pages · bulk · cut · recomp
Free — tester round
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Ten years

One body. Three phases. One method.

Where I started, 150 lbs, age 15
150lbsWhere I startedAge 15
The mid transformation, 170 lbs, age 16
170lbsThe mid transformationAge 16
The first major transformation, 185 lbs, age 18
185lbsThe first major transformationAge 18
After time away, 175 lbs, age 19
175lbsAfter time awayAge 19
Lockdown, 220 lbs, age 21
220lbsLockdownAge 21
Back in the gym, 195 lbs, age 22
195lbsBack in the gymAge 22
The second major transformation, 220 lbs, age 23
220lbsThe second major transformationAge 23
Now, 195 lbs, age 26
195lbsNowAge 26
Jason as a teenager
Before any of it
Who I am

Hi, I'm Jason.

My name is Jason. I was the skinny one — always. The kid who ate everything and stayed a stick.

I came to Toronto alone at 15 — barely spoke English, no friends, no guidance, had to figure everything out myself. Desperate to fit in the new culture and make a change, I landed on bodybuilding with zero idea what I was doing in the gym.

There was no guide available, so I did it the only way I knew — try something, run it, watch what my body said back, adjust. Ten years of that. Eight of them actually training. All natural: protein powder and creatine, nothing else.

I built to my biggest, lost it during lockdown, cut it back down, and built again. Every phase taught me the same thing: the plan was never the hard part. Knowing which question to ask next was.

This handbook doesn't take the trial and error out — that is the method. You'll still be running it, on your own body, because that's the only way anyone finds out what works best for them. What it gives you is a system and a direction, so you get there faster.

If it worked on a frame genetics didn't hand me, it can work on yours.

The credential
ISSA certified personal trainer certificate

I'm a certified personal trainer through the International Sports Sciences Association.

The problem

Getting started is hard. Staying on track is harder.

You've probably tried. A program off YouTube, a meal plan, an app. And it probably worked — for a while. Or you've been meaning to start for a year, and every search made it worse.

Then your body stopped responding, and nothing told you why or what to change. The program was written for someone else. The app tracked numbers but never decided anything. So you guessed, or you quit.

Information was never the problem. There's too much of it. The problem is that nobody hands you the whole thing in one place, and nobody reads your own numbers back to you and says what to do next.

How it works

One place to start. One loop to keep going.

The handbook is the whole thing in one place: every question, in order, written so you paste it into a free AI chat and build a coach around your body, your schedule and your equipment.

Then it keeps going. Log training, weight and food in a few seconds a day. Every four weeks the coach reads your month and tells you what to change — or tells you you're fine, and to keep going.

A plan that fits you on day one is easy to promise. One that still fits you in month four is the part I'm trying to build.

01

Ask

The right questions, in the right order. You don't get handed an answer — you get walked to your own.

02

Observe

Fifteen seconds a day. Training, weight, food. Real numbers off your real week, not what you assume.

03

Adjust

Every four weeks the coach reads the whole month and changes the plan. Then you go again, sharper.

What a page looks like · page 62 of 149
Day 1 · Chat 1 · Prompt 1 — Understanding Your Baseline
Copy this into ChatGPT:

Based on my profile, I want to understand my true baseline before I change anything. Can you help me figure out the following:

1. What is my estimated maintenance calorie intake based on my stats? …

2. Based on my training age and body type, how does my body likely respond to a caloric surplus right now — will I gain mostly muscle, mostly fat, or both?

…

Be honest with me — I want realistic expectations, not hype.

Jason's noteI spent my first year thinking I was special and could gain muscle faster than reality allowed. Getting honest about your baseline is humbling, but it's the only thing that sets you up for real long-term progress.

One of about forty. Every one is laid out like this: what to paste, why it's there, and what I got wrong the first time.

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The companion app

The tracker that runs the loop.

The handbook builds your coach. The app is where you feed it — training, meals and weigh-ins in a few seconds a day, then the monthly check-in when the month is up.

It runs in your phone's browser — nothing to install, no account with me, free. Read the handbook first: the app needs the plan the handbook builds.

Open the tracker

Why you're here

What I'm actually asking you for.

If you've tried it, tell me what you honestly think. Not to be nice — to be useful.

What should be better? Where did you get stuck, or have to read something twice, or put it down and not come back?

And tell me about you. What you're trying to change, what has made that hard so far, and what you still want to know. If there's a part of the last ten years I haven't written down and you'd find it useful, ask me for it — that's how I'll know what to build next.

Leave your feedback here →

Questions

Straight answers.

Why not just ask ChatGPT yourself?
Because ChatGPT will answer anything you ask — but a beginner doesn't know what to ask. Ask it to build a plan and you get a generic one-shot answer with no idea what it skipped. Ask twice, get two different plans. This is the sequence — the right questions in the right order, each building on the last. The prompts are free to copy. Knowing the order took ten years.
Who is this for?
Adults 18+ who've tried things and nothing stuck. Skinny and can't gain, carrying extra fat and can't lose it, coming back after years off — the Router reads where you are and builds your path. What matters isn't your body type. It's that you're done running other people's plans.
What if it turns out this isn't for me?
Then it should tell you, and it does. If your numbers say a deficit is the wrong idea — or you answer yes to the screening question about your relationship with food — the coach refuses to build you one and points you somewhere better. That's a safety net, not a diagnosis, and it's deliberately hard to talk past. A system honest enough to tell you when it isn't for you is worth more than one that says yes to everybody.
Do I need a paid AI subscription?
No. Free ChatGPT works. Claude and Gemini work too. It teaches the method, not a product.
Do I have to track my food?
You log meals in whatever food app you like — Cronometer is the default suggestion — and once a week you screenshot its summary and hand it over. You never retype a number. The tracker app does the same job if you'd rather keep everything in one place. And if you'd rather not track at all, there's an honest fallback: eat consistently, hit your protein, tell the coach you're not tracking, and let your weight trend carry the signal.
Is this a workout program?
No — and that's the point. Programs are someone else's answers. This is a system for building your own coach: training, nutrition and recovery built around your body and your data.
Is this medical advice?
No. This is educational content for adults 18+, based on personal experience and an ISSA personal training certification — not medical, dietetic, or health-care advice. Talk to your doctor before starting any training, nutrition, or supplement change.
Tester round · free

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Leave your email and the download opens on the next page. In return, tell me where it breaks — there's a form when you're done.

About the feedback form: I'll be straight with you, it isn't a two-minute job — five or ten, depending how far you got. But I read every single one myself, and right now it's the only thing telling me whether any of this actually works. If you fill it in, thank you — genuinely.

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Leave a review

Same form — choose “I just want to leave a review” at the first question and it takes you straight there. Good or bad, I'd rather have it honest.

By entering your email you're asking for the handbook, and agreeing that I can write to you once to ask how it went. Nothing else, no list — and you can ask me to delete your address at any time.
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Business or coaching enquiries: jasonxiezh123456@gmail.com · Instagram

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Want something more hands-on?

The handbook is built so you don't need me. But if you'd rather have a person in it — someone to check your form and answer as things come up — tell me what you're after and I'll come back to you.

Got it — thank you. I read these myself and I'll reply to you personally. If it's urgent, email me directly at jasonxiezh123456@gmail.com.

Your details are used to answer this enquiry and nothing else — no mailing list, and no sharing with anyone. Sending this isn't a commitment, and you can ask me to delete your details at any time. Coaching is for ages 18+.