For Busy Professionals Ready to Lose the Weight and Keep It Off

You Haven't Lost The Weight And Kept It Off Yet. It's Not Because Of Your Age, Your Schedule, Or Your Body.

No extreme diets, endless cardio, or overwhelming workouts. I teach a sustainable, attainable approach to weight loss.

/ Meet Your Coach

Karl Mergille

I am a certified personal trainer and nutritionist. I have been training for the past 12 years and coaching for the past 8.

I was overweight in high school. I had love handles. I had a stomach I could not stand looking down at. I hid behind baggy clothes, baggy sweatpants, baggy shirts, because I did not want anyone to see what I saw. I felt invisible, and I spent most of my life stuck in my own head about the way I looked.

So when I started my own weight loss journey, it was never just about the number on the scale. It was about getting out of my own head, being able to take my shirt off at the beach or the pool without flinching, and actually liking the person looking back at me.

I tried keto. I tried every diet everyone else was trying. None of it worked, because none of it was something I could actually stick to. It was not until I started taking nutrition classes that I found a way to eat that let me lose the weight, keep it off, and build real strength, without starving myself or living like a rabbit for the rest of my life.

Then, toward the end of college, I tore my ACL. Not once, twice, along with my MCL and cartilage in the same knee. That injury put me right back in the exact place I had fought so hard to get out of, doubting myself, feeling like I was destined to fall apart again. But the habits I had already built gave me something to hold onto. After surgery and physical therapy, I got back in the gym, back to squatting, and back to the version of myself I had worked to become.

At the time, I was running my coaching business out of my garage with about 60 clients. After tearing the same knee twice playing basketball with friends, in 2020 and again in 2021, I will be honest, there were moments I wanted to walk away completely. But I kept showing up, because I knew what it felt like on the other side of giving up, and I was not willing to go back there.

Eventually I moved my coaching online, because I realized something training alone could never fix. People would train hard with me, go home, eat 5 slices of pizza, and ask themselves why they did it. Training was never the missing piece. The missing piece was learning how to actually eat in a way you can live with, and understanding why you overeat or snack late at night in the first place. You believed something was wrong with you. That is not true. It happens because nobody ever showed you a different way.

This is exactly what I bring into every relationship with my clients now. Not just a training plan, but an understanding of the habits and the mindset that got you here, so you can actually change them for good.

If you have ever told yourself your situation is the exception, your age, your schedule, your body, your history of starting over, I understand that more than most coaches ever will, because I have told myself the same thing.

Why You Haven't Lost It Yet

It's Not You. It's The Plan.

If you cannot seem to lose weight, it is not an effort problem. Your approach to training, nutrition, and recovery is simply not putting you in a position to actually lose weight and keep it off. You have tried cutting carbs. You have tried moving fast. You have tried the supplements. You have tried the group classes. You put in the effort, but the weight keeps coming back.

What you actually need is an approach built around your life, one that gets the weight off and keeps it off for good. Your body is not broken. Your plan is.

Nicole believed her weight meant something could go wrong at any moment, until the day it did. Ray could not sit down with 2 slices of pizza without it turning into 6. Liliana was convinced menopause had permanently closed the door. Chrisla was told her PCOS meant this simply was not possible for her body. Kyle had the drive but never the actual structure. Paul had the equipment and the time, but never a plan built specifically around his life.

None of them were broken. So what you have to do is build the habits, structure, and consistency that create long term success. That is exactly what works.

Over time, we use what we learn from the first few weeks and months of training, and how your body responds to it, and from there we make the adjustments that keep moving you in the right direction. Over time, those adjustments become new habits. Those adjustments become the foundation. Those adjustments become what actually leads you toward losing the weight and keeping it off.

Then we remove the tracking. We establish trust between your mind and your body. And I show you how to use the tools you learn along the way to maintain your results for life, so you never have to go on another weight loss journey again.

The goal was never to make you dependent on one single thing, a supplement, a diet, that magically gets you there. The goal is to educate you well enough that you are confidently managing your own nutrition and training for the rest of your life, so you lose the weight, keep it off, and manage it completely on your own terms.

So if you are stuck, apply below, and we will see if you are a good fit for the program.

Apply now →

Training built around what you can do right now. Nicole was at 497 pounds, she could not train like someone starting at 250 pounds trying to lose 40. Her goal was to lose 200-plus. We train you where you are today, so we can build you up and get you stronger and healthier over the long run.

This is not about following a guide. It is about learning the basic nutrition and habits your body actually needs to lose the weight and keep it off forever. Guides only take you so far. Once you learn the foundations of food and identify the habits that have been holding you back, overeating, late night snacking, that becomes the key to results that actually last.

I am not a believer in just one weekly check-in. Yes, we have a weekly check-in, but every day I am looking at what you are eating, how your training went, and asking you questions that make you think on a deeper level. This is not a sheet you fill out once a week, it is me mentoring you and showing you exactly what you need to do.

Yes, I will keep you accountable, but there are times we need to hop on a call, or a Zoom, so I can show you how to train properly, or dig into what is actually holding you back. I am always willing to go above and beyond for my clients. At any point, I am a text or call away, so you never feel stuck or alone.

Paul had a bad back. Kaleef had a bad shoulder. We start you where you can actually handle it, then build you up through a program that shows you how to train around your limitations while strengthening your weaknesses. Paul is playing hockey again with no pain. If you are afraid to start because of pain, know you can work through it, and you kind of have to, because otherwise it just gets worse and limits what you can do every day. Do not wait. Taking action is the best course of action.

I am not here to be a fad. I am here to show you the foundation you need to lose the weight and keep it off for the rest of your life. Most coaches tell you that you can lose it in 30 or 90 days. You do not need 90 days. You need a plan that helps you see food, training, and self accountability in a completely different way, because that is what you have actually been missing, not another 30 or 90 day program. My goal is to build you for life, not just 30 days.

I only take on 10 new clients each month, no less, no more. As the only coach here, that is what lets me actually prioritize your nutrition, your training, and your accountability the way it deserves. Spots tend to fill up fast.

Real Clients · Real Weight Loss

Over 250 Clients
Have Lost The Love Handles
And Kept It Off.

40 lbs Lost · 4 Months Dylan

Dylan always saw himself as an average guy who just was not built for the gym. I showed him how to actually show up and push himself. In 4 months he lost 40 pounds, something he had never been able to do his entire life.

45 lbs Lost · 6 Months Ray

Ray's biggest struggle was never the gym, it was food. 2 slices of pizza always turned into 6. I helped him learn to eat the foods he actually loves while still losing 45 pounds in 6 months.

Lost The Weight, Then Kept Going Kyle

Kyle traveled constantly and used it as the reason he could never get in shape. I built a plan around his travel, not against it. He lost the weight, then dropped another 10 percent body fat, and is back on the dance floor with total confidence.

Mindset Shift Arthur

Arthur's biggest obstacle was never food, it was his mindset. He kept training like it was still college, 6 days a week, until it stopped working for his life as a working salesman. I showed him 2 to 4 sessions a week was enough.

255 → 210 · 6 Months Paul

Paul had a bad back, a home gym, and all the time he thought he needed. What he did not have was a plan built around his kids' sporting events instead of against them. 2 years later, he has kept it off, with no back pain.

91 lbs Lost · 10 Months Kaleef

Kaleef struggled with his weight for most of his life, habits that started with football and never got rebuilt after college. Even working around a bad shoulder, in 10 months he lost 91 pounds and feels more confident than ever.

100 lbs Lost · 1 Year Marie

Marie did not just want to lose weight, she wanted to live longer and healthier as she aged. Years of kickboxing and cardio never worked. I showed her how to build real muscle, and in 1 year she lost 100 pounds, walking into her son's wedding at her lightest weight in years.

45 lbs Lost · 4 Months Namthip

Namthip struggled with her weight for as long as she can remember. In 4 months, she lost 45 pounds and reached a weight she had not seen since high school.

40+ lbs Lost Liliana

Liliana believed menopause had permanently closed the door on losing weight at her age. She lost 25 pounds in her first 4 months, and over 40 pounds total since, feeling stronger than ever.

40 lbs Lost · 6 Months Chrisla

Chrisla was told her PCOS meant weight loss just was not in the cards for her. Through training and eating built for her actual body, she lost 40 pounds in 6 months and learned how to keep it off for good.

25+ lbs Lost Jessica

Jessica is a single mom and a full time nurse who wanted to be strong and a better example for her daughter. She was skeptical at first, then went all in. In her first 4 months she lost 25 pounds and kept building from there.

200 lbs Lost · 2.5 Years Nicole

At 497 pounds, Nicole's biggest fear was falling and not being able to get back up, and it happened, stuck on the floor for 8 hours with no one able to help her. As a single mom of 2, over 2 and a half years, she lost 200 pounds, and is now an advocate for women choosing to lose weight without surgery.

Lost 30 lbs · Ate Her Favorites Sahiba

Sahiba lost 30 pounds while still eating her favorite foods. No fads. No fear. Just better decisions repeated, day after day.

50 lbs Lost · 6 Months Sarah

Sarah spent years trying every diet and cardio routine under the sun and could never figure out what worked. In 6 months she lost 50 pounds, and for the first time, she has the energy to actually enjoy her life again.

25 lbs Lost · 4 Months Yenni

Yenni is a nurse and a single mom who did not want her habits to pass down to her daughter. I helped her find a way of eating she could actually stick to, and fall in love with the gym again. Now she brings her daughter with her, showing her firsthand what she once thought she could not do.

Shredded In 4 Months Joel

At 40, Joel's own family was teasing him about his habits and how he looked. He wanted to lose the weight, get shredded, and let go of old habits like drinking too much. In 4 months, despite a packed schedule, he got there, more confident and a better version of himself.

Under 200 lbs · First Time Since 1997 Mel

Mel's biggest win was never just the scale. I helped her get below 200 pounds for the first time since 1997, but what mattered most was becoming strong and capable enough to bring that same growth back to her own mom. Through the same process, Mel lost the weight, and helped her mom lose weight right alongside her.

25 lbs Lost · 4 Months Aamina

Aamina wanted to lose the belly fat and finally feel confident in her own body again. In 4 months, I helped her lose 25 pounds, and the real win showed up in her closet, jeans she bought years ago and put away now fit again. Now she's buying new clothes and living a more confident life.

All4Fit Coaching You're next.

These are real client wins. Your comeback starts with the next decision.

Apply Now →

/ Watch The Stories

Hear it straight from people who have done this.

/ Sahiba's InterviewWatch The Story

/ Sarah's InterviewWatch The Story

/ Nicole's InterviewWatch

/ Mel's InterviewWatch

/ Yenni's InterviewWatch

/ Liliana's InterviewWatch

/ Arthur's InterviewWatch

/ Joel's InterviewWatch

/ Story 01Watch

/ Story 02Watch

/ Story 03Watch

/ Story 04Watch

/ Google Reviews · 5.0 · Verified Clients

Real Wins

The wins they came for.

Not just the training plan. Not just the macros. These are the outcomes clients actually wanted: weight loss, confidence, less pain, better movement, and the feeling of being themselves again.

/ Quick Win60 Sec

"I lost 40 lbs in 6 months and feel 10 years younger."

"I lost 30 lbs while still eating my favorite foods."

"I can finally play hockey on Thursdays without my back hurting."

"I got jacked doing less than I was doing before."

"I'm back on the field playing softball again."

"I walked into the Coast Guard in 4 months."

Real questions

The questions busy people losing weight actually ask.

This is for people who are serious about long term success, who want to lose the weight and actually keep it off for life. This is not for someone looking for a quick fix, someone who wants to lose weight for 3 months and then watch it come right back. If that is what you are looking for, this is not what we do. What I do is help you lose the weight and build a sustainable lifestyle around it for the rest of your life.

Yes. The program is built for people who have not trained seriously in years or have not stayed consistent in a long time. We do not start where you used to be. We start where you are right now and build back up the smart way. Most clients are coming back after years of inconsistency, weight gain, or life getting in the way.

Yes. This is one of the biggest reasons my coaching works for busy adults trying to lose weight without adding more pain to their day. I tore my ACL twice in the same knee, so I understand what it takes to rebuild around real limitations. Your program is built around your specific limitations, not against them. We strengthen what has been weak, improve how you move, and stop forcing your body through training it is not ready for.

Most clients train 3 to 4 days per week for about 45 minutes per session. The goal is not to bury you with more work. The goal is to build the right plan so you can stay consistent, recover, and keep progressing even with a busy schedule.

Both work. If you have a gym, great. If you train at home, we build around the equipment you have. Your equipment does not decide your results. Consistency, progression, and coaching do.

This is a premium, 1 on 1 coaching program, typically a 3 to 4 figure investment depending on the length and structure that fits you best.

With this, you get direct access to me, Karl, as your coach. I take the time to actually learn about your struggles and what has been holding you back, and I stay consistently accountable with you through texting and calling, not a generic weekly check-in. We collect the data points we need along the way, calories, macros, training volume, intensity, frequency, exercise selection, and use that to make real adjustments so you keep moving the needle forward. This is for people who want coaching, accountability, and a real plan built around them, not the cheapest option out there. Exact pricing is covered after your application, once I know where you're starting from and what you actually need.

I personally review every application, there is no team filtering these, it is me.
If it looks like a good fit, I will send you a text to book a quick call.
On that call, we go over your application together and talk through how you can actually move the needle forward, even if it turns out we are not the right fit, I will still point you toward what will help.
If we are a good fit, I will offer you a spot in the program, and we will get started on your plan to lose the weight and keep it off for good.

YouTube gives you exercises. Coaching gives you a plan, adjustments, accountability, and someone who can help you make the right decision when life gets messy. The difference is not just the workout. The difference is having someone coach you through the process.