Why “Core Blasting” Won’t Build Long-Term Strength

(A Guide For Adults Over 35 Who Want To Stay Strong For Decades )

It’s February.
You’ve done three weeks of crunches to “get your core back” after Christmas, and guess what? You don’t feel stronger. You feel tighter, sorer and movement just doesn’t feel as good.
That’s because you’re training for a 6-pack, not for strength that lasts.
Here’s what nobody tells you: repetitive crunches don’t build the kind of core strength that helps you move better at 45, 55 or 65. They build muscular endurance in one plane of motion while ignoring what your body actually needs for long-term training: stability under load.
In this guide, I’ll show you why “core blasting” won’t build sustainable strength, what your core actually needs and how to train properly for the next 20 or 30 years.

Why the Late January “Ab Challenge” Doesn’t Work for Adults Over 35

Early February is when the cracks start to show.
You’ve followed the “30-Day Ab Challenge”. You’ve done hundreds of crunches. You’ve held planks until you couldn’t hold them anymore.
And you don’t feel stronger. You feel tight. Stiff. Maybe even irritated.
This isn’t a lack of effort. It’s a fundamental misunderstanding of what core strength actually means for adults over 35.
At Templetown Strength & Conditioning in Carlingford, I coach adults who want to train for decades, not for Instagram photos. And one of the first things we address is this outdated approach to core training.

The Problem With “Core Blasting”

Here’s what happens when your training revolves around crunches and high-rep ab circuits.

  1. Repetitive spinal flexion under fatigue

Every crunch, sit-up or “ab blast” forces repeated spinal flexion while your muscles are already tired.
For younger athletes with high recovery capacity, this might be manageable.
For adults over 35, it often creates:

 

  1. Training in one plane of motion

Life doesn’t happen lying on your back doing crunches.
Real-world strength demands:

Crunches train none of this.

  1. Building endurance, not capacity

High-rep ab work builds muscular endurance. That’s not useless, but it’s not the main thing adults over 35 need.
You don’t need a five-minute plank.
You need a core that can stabilise while you deadlift, squat, carry and move through real life.
That’s capacity.

What Your Core Actually Needs: The Pillar Concept

Your core isn’t meant to crunch. It’s meant to resist movement while your hips and shoulders do the work.
Think of it like a pillar holding up a building. It doesn’t bend. It stays rigid.
When you train your core as a pillar rather than a hinge, you build strength that translates to:

The 3 Components of Sustainable Core Strength

At Templetown SC, we focus on three things.

  1. Anti-rotation strength

Your core needs to resist twisting forces, not create them.
Examples:

Why it matters: this is what keeps you stable when you’re carrying a bag on one side, lifting awkward loads or moving quickly in sport.

  1. Bracing capacity

This is your ability to create internal pressure through your torso so you can lift well, move confidently and stay stable under load.
How we teach it:

Why it matters: bracing is what makes compound training feel strong and controlled, not shaky and random.

  1. Hip mobility (so your spinedoesn’tcompensate)

A lot of people think they have weak cores when they actually have immobile hips.
If your hips can’t move through their proper range, your body steals movement somewhere else. Usually your lower back.
Examples:

Why it matters: when your hips move well, your spine can stay stable. That is the foundation of smooth, sustainable training.

Training for Longevity vs Training for Instagram

There’s a difference.

Training for Instagram:

Training for longevity:

At Templetown SC, we train adults who want to be strong at 60, not just lean for a photo.

How I Used to Train My Core (And Why It Didn’t Work)

I used to do what everyone did.
Crunches, Russian twists, bicycle kicks. Hundreds of reps. Multiple times a week.
And I never felt stronger. I just felt tight and constantly managing stiffness.
It wasn’t until I stopped treating my core like a muscle to exhaust and started treating it like a system to strengthen that everything changed.
Now, after eight years coaching adults in Carlingford, I know this approach works for long-term strength and capability.

The Compound Lift Advantage

Here’s something most people don’t realise.
The best core exercises aren’t “core exercises”.
They’re compound lifts.
When you deadlift properly:

That’s exactly what your core needs.
Same with:

You can’t crunch your way to a 150kg deadlift. But you can deadlift your way to a bulletproof core.

Practical Implementation: What This Looks Like in a Training Week

At Templetown SC, here’s how we usually programme core work for adults over 35.
The exact structure varies by individual, but the principles never change.

Monday and Thursday: compound strength days

Tuesday and Friday: accessory days

Result: a strong, stable core that supports decades of training without living on the floor doing crunches.

Who This Approach Is For

This works best if you:

At Templetown SC, I offer: 

We don’t train people to manage limitations. We train people to be strong, capable and confident.

The Long Game: Building Strength That Lasts

You’re not training for one month.
You’re training so you can:

One month of crunches won’t get you there.
But a structured approach to core strength, combined with proper compound lifting, absolutely will.

Listen to the Full Episode

I dive deeper into this topic in Episode 20 of The Train Properly Podcast:
Why “Core Blasting” Won’t Build Long-Term Strength
New episodes every Wednesday, 6AM GMT
Listen on Spotify, Apple Podcasts, or YouTube.

Ready to Train Properly?

If you’re realising the thing holding you back isn’t motivation, but a lack of structure built for adults over 35, that’s exactly what I help people with.
I coach adults in Carlingford, Dundalk, Newry and online to build sustainable strength and train properly for the long term.

Let’s talk about what training for longevity actually looks like. 
Train properly, 
Paul Hughes 
Templetown Strength & Conditioning 

FAQ: Core Training for Adults Over 35

Q: Should I stop doing planks completely?
A: Planks aren’t inherently bad, but holding them for five minutes isn’t building the kind of strength you need. Keep them short (30–60 seconds) with quality bracing, or use loaded carries for better transfer.
Q: How many times per week should I train my core?
A: If you’re doing compound lifts properly, your core is being trained 3–4 times per week already. Add 1–2 sessions of anti-rotation work and you’re covered.
Q: Will I still get visible abs without crunches?
A: Visible abs are mostly about body composition and nutrition, not exercise selection. Compound lifting and bracing builds a strong midsection and if your nutrition supports it, you’ll see it.
Q: What if I’ve always done high-rep ab work?
A: That’s fine. Many people have. But if you want strength that lasts into your 50s and beyond, a stability-focused approach will serve you far better long term.
Q: How does this apply to GAA training?
A: GAA demands sprints, contact, change of direction and rotational power. Your core needs to stabilise through all of it. Bracing and anti-rotation strength will carry over far more than endless sit-ups.