The 5-Day Power Center Challenge
Your core is more than abs. It’s what keeps the rest of you strong and steady.
Five guided sessions to build core stability, control and strength you can actually use, when you lift, carry, balance, train and move.
No equipment. No endless crunches. Just press play and follow along.
Start the challenge: $7.50/month$7.50/month for your first 3 months, then $15. Cancel anytime. 30-day guarantee.
✓ 30-day money-back guarantee✓ Cancel anytime✓ Secure Stripe checkout
Does this sound familiar?
- Your lower back starts working harder the moment a plank gets difficult.
- You can do sit-ups, but exercises that require balance and control expose a different kind of weakness.
- Someone says “engage your core” and you still wonder what you're actually supposed to engage.
- Your form looks good at the start of a set, then your ribs flare, hips shift or back takes over as you get tired.
- Carrying something heavy on one side makes your whole body lean with it.
- Your arms and legs are strong, but the middle connecting them doesn't always feel as solid.
- You've trained “abs” plenty of times without feeling noticeably more stable.
Because training your abs and training your core aren't quite the same thing.
Most core workouts focus on the part you can see
Crunches. Sit-ups. Leg raises. Planks until everything shakes.
They can certainly make your abs work. But your core has another important job: keeping your body controlled while everything around it moves.
When you carry something in one hand, your core helps resist being pulled sideways. When your arms and legs move during exercise, your core helps keep your trunk stable. When you lift something awkward, your body doesn't get to pause and arrange itself into a perfect exercise position first.
Real movement asks your middle to stabilise, resist, transfer force and adapt.
That's what we're training.
The goal isn't to make your abs burn harder
A burning midsection can feel productive. But being exhausted isn't the same as being in control.
You can hold a plank for a long time while compensating somewhere else. You can do dozens of crunches without ever learning how to keep your trunk steady while your limbs move.
So instead of asking: “How many reps can I survive?”
we're asking: “Can I keep control as the movement gets harder?”
That's a much more useful kind of core strength.
The IXLEAN approach
Learn to create stability
“Engage your core” shouldn't be a vague instruction. Start by learning what controlled tension through your middle actually feels like, without simply sucking in your stomach or holding your breath.
Keep your middle steady while everything else moves
Once you've found that control, your arms and legs begin moving around it. That's where core training starts becoming useful.
Train the body, not just the abs
Your core doesn't work alone in real life. The challenge progressively connects it to larger movements, balance and whole-body control.
Because the point isn't stronger abs.
It's a stronger connection between your upper and lower body.
What could better core control change?
Planks feel more like a whole-body exercise
Instead of waiting for your lower back or shoulders to take over, learn to keep your middle involved as fatigue builds.
Lifting feels more connected
Strong legs and arms work better when they have a stable middle to transfer force through.
Balance becomes less of a scramble
Your core helps control what happens when your weight shifts and your body has to react.
Carrying becomes a core exercise without you even trying
Groceries. Luggage. A child. Something awkward in one hand. Your body has to resist being pulled out of position.
You finally understand what “use your core” means
Not as an anatomical lesson. As something you can actually feel yourself doing.
Your 5 days
Day 1
Find your core
Learn to create controlled tension through your middle and recognise when other areas start compensating.
Day 2
Stay steady while your arms and legs move
Keep your trunk controlled as movement happens around it.
Day 3
Resist being pulled out of position
Challenge your core in different directions instead of only bending forward through another set of crunches.
Day 4
Connect your whole body
Combine core control with larger movements, balance and changing positions.
Day 5
Put your core to work
Bring the previous four days together into a complete session, then notice what happens when you plank, balance, lift or carry.
This challenge is for you if...
- Your lower back tends to take over during core exercises.
- “Engage your core” has always felt like frustratingly vague advice.
- You can train your abs but still don't feel particularly stable.
- Your form starts falling apart as exercises get harder.
- You lift, run or train and want a stronger connection between your upper and lower body.
- You want core strength that carries over into actual movement.
- You'd rather follow a structured progression than collect another list of ab exercises.
This isn't for you if...
- You're looking for “six-pack abs in five days.”
- Your main goal is burning calories.
- You have an abdominal or back injury that requires professional assessment.
- You only want bodybuilding-style ab isolation.
This isn't an ab challenge.
It's a challenge for the part of your body that keeps everything else working together.
Led by
Sebastian Brosche
Two-time BJJ world champion. Black belt in BJJ and judo.
Every session is taught follow-along style.
Sebastian demonstrates the movements while you do them with him and guides you through what to pay attention to as the exercises progress.
No workout to design. No list of exercises to memorise. No guessing whether you're supposed to feel everything in your abs or somewhere else.
Sebastian moves. You follow. Each day builds on the last.
And after Day 5, you don't have to stop
The challenge is included with your IXLEAN membership. You also get:
6 complete programs
Structured programs for continuing your mobility, flexibility and movement training.
26 guided sessions
Follow-along sessions whenever you want to work on a specific part of your body.
AIPT, your AI personal trainer
Helps plan your week and decide what to work on next.
Five days teaches you the foundation. IXLEAN helps you keep using it.
Start for $7.50/month
$15/month$7.50/month
for your first 3 months. Then $15/month. Cancel anytime, even tomorrow.
✓ 30-day money-back guarantee✓ Cancel anytime✓ Secure Stripe checkout
Try it for 30 days
Do all five sessions.
Then pay attention the next time you plank, balance, carry something heavy or train.
If you decide IXLEAN isn't for you within 30 days, reply to any of our emails and request a refund. No complicated forms.
EU/EEA members retain applicable statutory withdrawal rights.
The honest answers
“I already train my abs.”
Good, but this challenge has a different goal.
Instead of primarily training your torso to bend, we're working on keeping your middle stable and controlled while the rest of your body moves.
“My core is really weak.”
That's exactly why the challenge progresses over five days.
You don't need to arrive strong. Start with the control you have today and build from there.
“I lift weights. Isn't my core already getting trained?”
It probably is.
But there's a difference between your core participating in an exercise and deliberately training its ability to stabilise and control movement.
If your lower back takes over, your form changes under fatigue or your middle feels like the weak link, dedicated work can expose what your normal training doesn't.
“Will this give me visible abs?”
That's not the promise.
Visible abs depend on factors beyond core strength. This challenge is about what your core does, not what it looks like.
“What if I miss a day?”
Continue when you can.
The point is progressive practice, not maintaining a perfect streak.
“What if I stop using it?”
Cancel.
There's no long-term commitment, and your first 30 days are covered by the guarantee.
Strong arms can pull. Strong legs can push.
But your middle is what connects the two.
Give it five days of training for more than just a six-pack.
Build the stability and control that show up when you lift, carry, balance and move.
$7.50/month for your first 3 months · Cancel anytime · 30-day guarantee
Try it for 30 days. If it doesn't help, you don't pay.
That's the whole deal, in one sentence.
Join, do the challenge, use the sessions. If your body doesn't feel better within your first 30 days, we refund the full amount.
No forms, no questions. Email support@ixlean.com or just reply to any of our emails, and the money goes back where it came from.