(And Why Cardio Alone Isn’t Enough)
When it comes to longevity and health, it’s time more people understood how to actually get where they want to go.
Yesterday, while coaching my Teens class, one of the athletes said something that stopped me in my tracks.
Mid-session, barbell in front of him, loading plates slowly and cautiously, he looked up and said:
“I don’t want to lift too heavy today. I don’t want to get injured. I don’t think lifting heavy is that good for me.”
In that moment i realised something. Enough is enough!
That sentence didn’t come from him!
It came from years of noise absorbed by him and his parents, and by society as a whole, without his even knowing it. Years of messaging, most people have heard their whole lives.
Because for decades, the world has repeated the same advice:
If you want to be healthy, just do more cardio.
Run more.
Sweat more.
Move more.
Burn more.
And while there is truth in that…
…it’s only a small part of the picture.
The Pattern I See Every Year
In this job, I see cycles.
People arrive motivated. They’ve made a decision. They want change.
Some want fat loss.
Some want confidence.
Some want to keep up with their kids.
Some want to feel like themselves again.
But when you really listen — when you hear what they mean instead of what they say — something deeper shows up.
They’re not just chasing weight loss.
They’re chasing control of their body again.
And right now, more people than ever are realising the same thing:
Something internally feels different.
Pre-menopause.
Perimenopause.
Post-menopause.
Low testosterone.
Low energy.
Poor sleep.
Brain fog.
Different words. Same story.
Their body isn’t responding the way it used to.
The Cardio Phase Most People Go Through
Before they walk through our doors, most have tried the same solution:
More walking.
More jogging.
More spin classes.
More cardio machines.
At first, it works.
They sweat.
They feel productive.
They feel virtuous.
But weeks later, something frustrating happens.
Nothing changes.
Or worse, things change… then stop.
Energy dips.
Weight plateaus.
Motivation fades.
And they assume the problem is them.
It isn’t.
The problem is the strategy.
What Most People Aren’t Told
Cardio trains your heart and lungs.
Strength training trains your entire system.
Muscle isn’t just for athletes or aesthetics.
Muscle is your body’s longevity engine.
It regulates blood sugar.
Supports hormone function.
Protects joints.
Strengthens bones.
Improves brain health.
Increases metabolic efficiency.
Scientists studying ageing consistently find that one of the strongest predictors of long-term health isn’t weight…
It’s lean muscle mass.
Researchers like longevity scientist David Sinclair repeatedly point to muscle and metabolic health as key drivers in slowing biological ageing.
Because muscle isn’t decoration.
It’s protection.
The Hormonal Turning Point
This becomes even more obvious during hormonal transitions.
Many people walk in tired, frustrated and confused. They’re eating well. Moving daily. Trying to do everything “right.”
But their body isn’t responding.
Doctors like Mary Claire Haver explain why: as oestrogen declines, women lose muscle faster, bone density drops, and metabolism slows. Men experience similar challenges when testosterone declines.
Which means the exact time people think they should switch to gentle exercise…
…is actually when they need resistance training most.
Fasting and hormone researcher Mindy Pelz often explains that muscle acts like a hormonal stabiliser.
More muscle → more stability.
Less muscle → more volatility.
And when people start lifting properly, something changes.
Not just physically.
Mentally.
The Moment It Clicks
There’s always a session where it happens.
Someone lifts a weight they never thought they could lift.
They step back from the bar.
They don’t scream.
They don’t celebrate wildly.
They just stare at it.
Like they’ve discovered something.
Because they have.
They’ve discovered they’re capable.
And capability is addictive.
What Intensity Really Means
Most people hear the word intensity and think danger.
They picture injury.
Risk.
Going too far.
But intensity is simply a signal.
When you lift heavy…
Sprint fast…
Push hard…
Your body receives a message:
‘We need to upgrade. Life demands more.‘
That signal triggers adaptation:
- stronger bones
- denser muscle
- faster nervous system response
- improved insulin sensitivity
- better hormone signalling
Light effort maintains.
Intensity transforms.
The Injury Myth
People often say they avoid lifting heavy because they don’t want to get injured.
Ironically, that mindset increases injury risk.
Bodies that aren’t exposed to load don’t build resilience.
Tendons weaken.
Bones thin.
Joints destabilise.
Muscles switch off.
Strength training, when done properly, doesn’t increase injury risk.
It decreases it.
Because strength is your body’s insurance policy against life.
But Do You Hate Cardio?
Let me be clear.
Cardio isn’t bad.
I do it.
I program it.
It matters.
It’s just not the leader when it comes to longevity.
Cardio improves heart health.
Boosts recovery.
Builds endurance.
Reduces stress.
But cardio is the assistant coach.
Strength is the head coach.
If longevity is the goal, resistance training must be the foundation.
Not because it’s trendy.
Because it’s biological.
If we’re honest, part of the reason people default to cardio is that it feels safer. Less confronting. Easier to hide in. You can move without ever really being tested.
Strength training doesn’t let you hide.
It exposes weakness.
Demands effort.
Requires progress.
And when we’re talking about your future health, your capability, and your quality of life…
Easy shouldn’t be the goal.
Effective should be.
The Real Question
At some point, everyone training has to answer one question:
Am I exercising for today… or training for the next 40 years?
Because those are not the same thing.
One burns calories.
The other builds capacity.
One is short-term.
The other is longevity.
One makes you tired.
The other makes you capable.
Final Thought
That teenager who was afraid to lift heavy?
He’s not unique.
He’s no different to the 40-year-old man whose energy has dropped.
The 50-year-old woman is navigating hormonal shifts.
The single mum who is trying to get her body back.
The dad of five who just wants to keep up with his kids.
Different ages. Different lives. Same turning point.
By the end of the session, the Teen who inspired this blog added weight to the bar.
Sure, I had to convince him.
But he felt it.
He felt his body respond.
He liked it. His confidence rose. He says he is coming back next week.
That’s the moment everything changes.
It can be hard to get someone to understand strength. But when they experience it. I know it.
There is a recent story about a 40+ year-old male who had this appifany.
A 50-year-old woman is going through the same thing.
And a single mum who, when she started with us, wouldn’t lift heavy, but is now excited to see heavy barbells.
This is because they are no longer afraid.
Because they have read the science we talked about.
The effect that weights have on hormones, metabolism, bone density, ageing, and resilience.
But remember, it doesn’t all come together just because you read it. It becomes real when your body proves it. That’s when training stops being theory and starts being identity; you will get somewhere.
So if you want to age well, you’ve got to lift. If you want more energy, you’ve also got to lift.
If you want resilience, most definitely lift. Run. Walk. Ride. Sweat. Do your cardio. But build strength first.
Because the people who stay capable in their 60s, 70s and 80s aren’t the ones who avoided effort.
They’re the ones who trained their body to handle life.
They don’t just live longer. They live stronger.
Get up. Get after it. BECOME EXTRAORDINARY.