underseage.studio
Edge Fit & Well x underseage.studio

How Claude actually works,
and how to drive it.

A hands-on guide for John and Rachel. Learn the parts, then drive it yourself.

With underseage.studio x Joshua Seage
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Three things make Claude work: the Model, the Context, and the Harness.

Get these three and everything else clicks into place.

Model
The brain.
Context
The brief you hand it.
Harness
The desk, the tools, the authority.
Part 1 · The Model

The Model is the brain, and it's the same everywhere.

It is the same Claude in the chat app, on your phone, and in Cowork. Raw smarts. It never changes between tools. What changes is what you give it, and what you let it do.

The chat app
Your phone
Cowork
One brain
Same everywhere
Picture this: a brilliant new hire on day one. Sharp, but they know nothing about your gym yet, and they cannot touch anything.
Part 2 · The Context

Context is everything on its desk for this one job.

It is everything you have said in this conversation, plus the files you have shared and any data you have connected. It is the brain's working memory for the job right in front of it.

On the desk right nowThis chat
This month's class timetable, pasted in
Your question: where are the gaps?
Older stuff slides off when the desk fills up

The desk has a size limit. When it fills, the oldest things slide off, and it forgets them.

At the gym: paste this month's timetable and ask it to spot the gaps. Clean, useful context.
Part 2 · Using context well

Give it the right brief, and start fresh for a new job.

Two habits, and your answers get sharper straight away.

1Hand it what matters

Give it what this job needs, not your whole world. A tight brief beats a big one. Too much on the desk and the point gets buried.

2New job, new chat

Switching to something different? Start a new chat so the desk is clean. A 3-hour chat that wandered across ten topics gives worse answers than a fresh one.

At the gym: one fresh chat for the timetable, another for member emails, another for pricing. Each one stays sharp.
The key distinction

Context is this conversation. Memory is what carries across them.

The desk, right now

Context. Everything on the desk for this chat. It gets wiped clean the moment you start fresh. Perfect for one job, gone by the next.

The filing cabinet, across time

Memory. What it keeps between conversations. Set it once and it is still there next time you open a chat.

By default a brand-new chat has an empty desk and no memory of last time. That is why it can seem to forget.

In Cowork · Memory

A Project gives Claude a memory of your gym.

Lasting memory lives inside a Project, a saved workspace. Put your gym's essentials in once, and every chat inside it starts already knowing you.

Project: Edge Fit & WellSet up once
Sitting in its memory, always
Your brand and the way you talk to members
Opening hours and the class timetable
Memberships and pricing
How to: make a Project called Edge Fit & Well, drop in the essentials, and it never starts from zero again.
Part 3 · The Harness

The Harness is the desk, the tools, the logins and the authority to act.

It is what turns a brain that can only talk into a worker that gets things done.

Thin harness (plain chat)

It can only reply with words. No files, no apps, no actions. Handy, but it hands the job back to you.

Full harness (Cowork)

It opens your files, uses your apps, takes real steps and checks its own work. The same brain, now able to do the job.

Same brain, bigger harness. Advice becomes action. That is the whole leap from chat to Cowork.

See the harness in action

Same brain, same request, two different harnesses.

One request. Tap to flip the harness.

"Write a welcome email to a new member."

Ask Claude (chat)

Same brain. The thin harness hands you words. The full harness does the job in place.

In Cowork · Skills

A Skill is a saved instruction you reuse with a slash.

Write how you do something once, save it as a Skill, then call it up by typing a slash. No re-explaining every single time.

/welcome
/welcomeHow we welcome a new member
/newsletterOur monthly member update
/class-planLay out a week of classes
How to: save "how we welcome a new member" as a Skill. Next time, just type /welcome and it is done your way.
In Cowork · Connectors

A Connector is a secure wire from Claude to one of your apps.

Connect an app once and approve access. Now your real stuff becomes context, and the harness can act on it. It only ever sees what you can already see.

Gmail

Gmail

Reads a thread and writes the reply as a ready draft, sitting in your inbox.

Approve once
Google Calendar

Calendar

Sees what is on and adds a class or a booking around your existing sessions.

Approve once
Google Drive

Drive

Opens your price lists, docs and member info, and works straight from them.

Approve once
How to: Settings, then Connectors, then Google, then Approve.
Beyond these: a custom Connector can be built to any app with an API, GymMaster included, so nothing is off the table.
Put it together

Six parts, one working assistant.

Model
The brain
Context
What it sees now
Memory
A Project
Harness
What it can do
Skills
Your SOPs
Connectors
Your apps
CoworkA brain that knows your gym, and can do the work
Step 2 · Claude Cowork

So Cowork hands you the finished job.

Now that you know why, here is what that looks like. Real files, ready to use.

formulas work

Spreadsheets

With the sums already working, not just a table of numbers.

Word docs

Letters, policies and packs, laid out and ready to send.

Slide decks

A quick deck for a class plan or a team update.

PDFs

A tidy, finished document, ready to hand to a member.

And it can run on a schedule. Every Monday, a brief of the 3 things that matter, on its own.
You stay in control

It drafts. You press send.

Every action asks first. Nothing sends on its own. It only sees what you can already see.

It drafts your emails and replies for you to check. It does not send on its own.
Every action asks you first. Nothing connects or runs silently.
It only ever sees what you can already see, through your own login.
You can pause it, or pull the plug, any time you like.
The honest bit

What it won't do, so there are no surprises.

It drafts, you send

It writes the emails, but you hit send. That is the safety catch, on purpose.

GymMaster, for now

It cannot pull GymMaster live yet. You export a report and it reads it. Still saves the hours.

It doesn't make photos

It will not shoot real photos of your gym. That is where Design comes in.

None of it is a dealbreaker. It just keeps things honest.

Your admin, automated

Now the point: your actual list, automated.

The jobs that eat your week, sorted into four, each with the way we set it up.

Emails and docs

Welcome, the 90-day journey, newsletters, SOPs, cleaning and repair schedules, the staff delegation list.
Skills + your Google

GymMaster numbers

No-shows, missed payments, new signups, your daily snapshot.
Export now, or a custom Connector for live

Socials and trends

Posts for your niche, and staying on top of what is trending.
Cowork + Claude Design

Money and planning

Budgets, forecasting, and designing your programs.
Cowork + real spreadsheets

We set up as many of these as we can on Monday.

Your admin · Emails and docs

Emails and docs that write themselves.

Each one becomes a Skill that pulls from your Google and drafts itself. Some just run on a schedule.

Saved as Skills, drafted for youYour voice
Welcome a new member the moment they join, in your voice
The 90-day journey, a nudge at day 7, 30 and 90
Your monthly newsletter, the member update ready to send
SOPs, how the gym runs written down once
Cleaning and repair schedules, who does what and when
The daily staff delegation list, out each morning on its own

We build these in the room.

Your admin · GymMaster

Your GymMaster numbers, two ways.

Same result, two levels of setup. Start easy, then upgrade when you want it hands-off.

1Today, zero setup

Export a report from GymMaster and drop it into Cowork. It reads it and drafts your missed-payment and no-show follow-ups. Nothing to build.

2Live, hands-free

A custom Connector to GymMaster's API, a small build. Your daily snapshot just arrives each morning, and the nudges run on a schedule.

Start with Way 1 today. Add Way 2 when you want it fully automatic.

Claude Design

Describe it, and Claude designs it.

Claude Design builds the first draft of your social posts, campaign visuals and flyers. You refine it just by chatting.

Step 1
Draft in chat
Talk out the idea and the caption with Claude.
Step 2
Lay it out in Design
Claude Design turns it into the visual.
Step 3
Finish in Canva
Polish it on-brand and publish, ready to post.
Built for your people: Everyday-fit folks Mums Women 35+ chasing strength and longevity The Legends

Honest note: real photos still come from your own pics or Canva's library.

What this gives you back
~40
hours a week on admin, roughly, between the two of you
off your plate handed back
Less admin Content handled More time coaching, and on the floor
underseage.studio

You've seen every part.
Monday, we drive it together, then it's yours.

Edge Fit & Well · a hand from a mate

With underseage.studio x Joshua Seage
01 / 21