Our summer body intake is open · Coaching spots are limited · Claim yours today

bACTIVE Claim your spot

Sign up now

For people who have tried everything

Lose 8 to 12 kg in 12 weeks. Without starving. Without guesswork.

A workout and meal plan written for YOUR body, your schedule and your starting point, by aStefan van der Merwe

Stefan van der Merwe · BSc Hons Biokinetics · Sport Science

Claim your spot Custom plan · Home or gym · All fitness levels

8000+transformations

35.6 kgbiggest result to date

4.9 ★client rating

Proof before promises

Don't take our word for it. Look.

No filters, no fitness models. Ordinary people with jobs, kids and busy lives, coached week by week.

Naomie Groenewald · 35.6 kg down

"I believed I was just meant to be overweight. I was wrong."

Wynand Kotze · 18.6 kg down

Full transformation while working a demanding job.

Marijke Cilliers · 11 kg down

"Die oefenprogram pas in my skedule as 'n ma."

Estelle, 17 kg at 70+ · Antoinette, 16.5 kg · Mischa, 15 kg · Zanru, 14 kg · and 8000+ more

I want a transformation like this

Sound familiar?

If it never stuck before, it was never about willpower

"I have tried every diet."

One-size-fits-all plans ignore your body type, your medical reality and your life. A plan built for someone else will always fail you.

"I am embarrassed to start."

Most clients had never set foot in a gym. You can do the entire program at home, and nobody in this community judges anyone. Everyone here started exactly where you are.

"I do not have time."

Your plan is written around your schedule: 25 to 60 minutes, gym or living room, built to fit around work and family.

"It is just my genetics."

Naomie believed that too, 35.6 kg ago. Habits can be coached, and coaching is the whole point of this program.

I know what it feels like to not like what looks back at you in the mirror. That is exactly why I built this program. You bring the decision. I bring the plan, the science and the accountability.

Ready to stop starting over?

One decision today. A different mirror in 12 weeks.

Claim your spot

The mechanism

Why this works when every diet failed

Custom Workout Plan

Fully custom-written for your body type, goals, injuries and medical conditions. Gym or home, 25 to 60 minutes, with follow-along videos in the b.Active app.

Custom Meal Plan

Dietitian-approved and written for your body, age and the food you actually enjoy. No starving, ever. Recipes, snack ideas and precise tracking included.

Private WhatsApp Community

A judgment-free group of people on the same journey, every shape, size and level. Daily motivation and accountability. You will never take on this challenge alone.

Personal Coaching by Stefan

Direct access to Stefan, a professional, qualified Biokineticist, not a chatbot. Weekly check-ins, your questions answered personally, and your coach in your pocket via the b.Active app.

Stefan van der Merwe's own before and after

Stefan's own cut, documented like every client's. He leads by example.

Who is coaching you?

Coached by science, not by hype

BSc Hons BiokineticsSport Science Graduate8000+ transformations

The fitness industry is full of influencers selling copy-paste plans. Stefan van der Merwe is a qualified Biokineticist, a clinical exercise specialist trained to write programs for real bodies: injuries, medical conditions, all ages and all starting points.

"I know how it feels to not like what looks back at you in the mirror. Let me help you get in the best shape of your life."

Trusted by names you know

South African artists train with Stefan too

"Stefan skryf 'n oefen- en eetplan wat spesifiek vir jou liggaam en kondisie is, om vir jou die beste resultate te gee."

Francois van Coke

Musician

"Ek het nooit gedink 'n mens kan so lekker eet en oefen op 'n plan nie. Ek voel amazing, so energized! Dankie Stefan."

Bernice West

Singer

"My vriend Stefan het sy graad in Biokinetika en help mense ongelooflike resultate kry. As jy wil hê hy moet jou help, stuur vir hom 'n DM."

Brendan Peyper

Singer

"Ek is stomgeslaan deur die kwaliteit van Stefan se oefen- en eetplan. Dit is so eenvoudig om te volg en die gewigsverlies-resultate praat vir hulself!"

Minkie van der Westhuizen

TV presenter & model

"Dit kan so frustrerend wees as jy nie weet wat om te eet en hoe om te oefen vir jou doelwit nie. Stefan se program word presies vir jou liggaamstipe geskryf om jou doelwit te bereik."

Leah van Niekerk

Singer

"I lost 8 kg in 8 weeks! I can't tell you how happy I am. Last time I weighed this much was in high school. Can't recommend Stefan enough!"

Nick Jordaan

Singer, Rubberduc

Still deciding?

Is this program right for you?

Let Stefan explain how the challenge works and who it is for.

Zero guesswork

From sign-up to transformation in three steps

01

Complete your assessment

Within 24 hours you receive a full intake questionnaire: body type, goals, injuries, medical conditions, food preferences and schedule.

02

Get your custom plans

Stefan writes your workout and meal plan. Both land in your b.Active app before the intake starts, with videos for every exercise.

03

Transform, with backup

Train, eat, check in weekly. Stefan and the community keep you on track for the full 12 weeks, through busy weeks and wobbles.

You deserve to love what you see in the mirror

DON'T DELAY, SIGN UP NOW

Everything that made you quit before is handled here: a plan written for your body, food you actually enjoy, workouts that fit your day, and a coach who will not let you drift. You bring the decision. The program does the rest.

12 Week Program (Singles package)

For you. Your body, your schedule, your plan.

R 5,800.00 once-off

That is R 483.33 per week, all-in

A plan written for your body, so it finally sticks
Eat food you enjoy and still lose the weight
Train at home or in the gym, 25 to 60 minutes
Weekly check-ins so you never drift
A judgment-free community that keeps you going
Progress you can measure by week 4, guaranteed

COUPLES PACKAGE

12 Week Program (Couples package)

Transform together. Twice the accountability, one journey.

R 9,500.00 once-off

That is R 395.83 per person per week · Save R2,100

Two custom plans, one shared kitchen and routine
Built-in accountability, you never train alone
Meals the whole household can enjoy together
Weekly check-ins so you never drift
One decision that changes both your lives
Progress you can measure by week 4, guaranteed

Why are spots limited? Because every plan is personally written and every client is personally coached by Stefan. This is not a downloadable PDF. When the intake is full, it is full.

Secure checkout via Shopify · Visa · Mastercard · Payflex

PROGRESS
PROMISE

The Progress-Promise Guarantee

Follow your plan and check in weekly for the first 4 weeks. If you see no measurable progress on the scale, in your measurements or in your energy, your Biokineticist will personally rework your entire plan for free, or we refund you in full. You risk nothing except staying where you are.

In their own words

What clients say after 12 weeks

★★★★★

"I believed I was just meant to be overweight, it is in my genetics, I told myself. Stefan showed me I did not need to starve myself to lose weight. I have so much confidence now. Life-changing."

Mishka

★★★★★

"Ek het nog nooit so goed gevoel nie. EN ek het NOOIT honger gevoel nie! Stefan weet verseker wat hy doen."

Christelle van Niekerk

★★★★★

"This program changed more than just what I saw in the mirror every morning. I feel like a completely new person."

Deon

★★★★★

"Ek is stomgeslaan deur die kwaliteit van Stefan se oefen- en eetplan. Dit is so eenvoudig om te volg en die resultate praat vir hulself!"

Minkie van der Westhuizen

★★★★★

"Planning, accountability and consistency make this program a winner. Stefan is right there every step of the way. It is a lifestyle changer!"

Ansu Kaplan

★★★★★

"Ek het 11 kg verloor. Ek het nog nooit beter oor myself gevoel nie. Fiks, gesond en vol energie."

Marijke Cilliers

Honest answers

Everything you are wondering but might not ask

I am very overweight and have never trained. Is this for me?

Yes, and you are exactly who this program was built for. Your plan is written for your current body, not some idealized starting point. Most clients begin with zero gym experience, and many train entirely at home. Nobody is thrown into workouts they cannot do.

Who is Stefan, and why should I trust him?

Stefan van der Merwe is a qualified Biokineticist (BSc Hons) and Sport Science graduate with over 8000 transformations to date, including well-known South African artists.

I have failed diets before. Why would this work?

Because those were generic plans, and this one is not. Your meal plan is written around your body type, medical considerations and the food you actually like, so you are never starving. And this time you have a qualified coach checking in weekly plus a community holding you up.

I have an injury or a medical condition. Can I still join?

This is Stefan's specialty. Biokinetics is the science of exercise for real bodies, including injuries and chronic conditions. Your plan is written around your condition, not despite it.

Do I need a gym membership?

No. Your plan can be written for gym or home training, anything from 25 to 60 minutes per session. You choose in your intake assessment.

How much time does it take per day?

25 to 60 minutes of training, depending on the plan you choose, plus normal cooking you would be doing anyway. The program is designed to fit around work and family, not replace them.

What happens right after I pay?

Within 24 hours you receive your intake assessment. Stefan writes your custom workout and meal plans, both are loaded into the b.Active app before the intake starts, and you are welcomed into the WhatsApp group.

What if it does not work for me?

The Progress-Promise Guarantee covers you: follow the plan and check in weekly for 4 weeks, and if you see no measurable progress, We rework your plan for free.

Is the WhatsApp group going to be full of fitness fanatics?

No. It is people like you: parents, professionals, beginners, all shapes and ages, all working toward the same goal. It is private, supportive and strictly judgment-free.

In 12 weeks you will wish you had started today

Spots in this intake are limited. When they are gone, you wait for the next one. You have the plan, the coach, the community and a guarantee. The only thing missing is your decision.

Claim your spot now

Not ready yet?

Join the priority list. You get first access when the next intake opens, before it is announced anywhere else.