Free Tool

Coach Karl

Fat Loss Roadblock Finder

2-minute free assessment to find out what's holding you back from losing more body fat.

— Coach Karl

The Fat Loss Roadblock Finder

All4Fit | Real Coaching for Real People. Online Fitness with Coach Karl.

All4Fit · Online Coaching · Est. 2019

Real coaching.
For real people.

We help people who used to feel like themselves get that version back, using coaching tailored to their body, their life, and their history.

0+ Years In Fitness
0+ Years Coaching
1000s Clients Coached
0lb Biggest Loss

Why All4Fit

Built for the people
everyone else forgets.

Listen. You don't need another bootcamp. You don't need a plan written for someone with three hours a day and zero stress. You need coaching built around your actual life. That is what I do.

01

Built around your life.

Busy schedule. Real food. Limited equipment. I build the plan around you. Not the other way around. The fastest path to results is the one you can actually follow.

02

Real accountability.

This is not a PDF you forget about. You get check-ins, adjustments, and a coach in your corner. I keep you honest when motivation runs out, which it will.

03

Real proven results.

Hundreds of clients. Pounds lost. Strength gained. Confidence rebuilt. Same method, every time. The work is yours. The blueprint is mine.

Coach Karl Coach Karl Mergille

Meet Your Coach

I have been in the gym
for over eight years.

Born in Haiti. Raised in New York. I got into this game because the gym changed my life when nothing else could. Eight years of coaching real people later, I still believe the same thing.

The body is not the goal. It is the proof. Proof that you finally took yourself seriously. Proof that you stopped negotiating with yourself. Proof that the version of you everyone is waiting on has been there the whole time.

That is what All4Fit is about. Coaching that builds the body and the person at the same time.

Read My Full Story →

How We Can Work Together

Pick the path
that fits where you are.

Three ways in. All built on the same method. Start where you are, grow into the rest.

Free Download

5 Habits.
Faster weight loss.

The 5 most important habits I install in every new client before we ever touch a workout. No starving. No deleting carbs. Just the small moves that change everything.

  • Stop guessing. Start losing.
  • Built around your real schedule.
  • The same playbook I use with paying clients.
  • Free PDF straight to your inbox.
Send Me The Guide →

Real Clients · Real Wins

This is what the work
actually looks like.

Real people. Real lives. Real before and afters. Not paid models. Not photoshopped. Just the work, the time, and the proof.

Ray transformation
Ray
Dylan transformation
Dylan
Krista transformation
Krista
Jessica transformation
Jessica
Brody transformation
Brody
Meggie transformation
Meggie
Kyle transformation
Kyle
Arthur transformation
Arthur
Sarah client transformation
Karl didn't just change my body. He changed the way I see myself. I almost didn't try. Three years later I'm still going strong.
Sarah Lost 40 lbs · 3 Years Strong

Reviewed by Real Clients

Word travels
when the work works.

Verified Google reviews from people who actually did the work. Read what they say about the program, the method, and the coach.

Free Download · No Card Required

Five Habits for
Faster Fat Loss.

The exact five habits I install in every new client before we even talk about workouts. No starving. No cutting carbs. No 5am workouts. Just five small habits that change everything.

Download The Guide
No Fluff. No Fads. Just What Works. The All4Fit Blog
Read The Blog →

The Next Move Is Yours

Stop waiting for
the right time.

There is never going to be a perfect Monday. There is just this Monday. Pick a starting point and let's build something.