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Every week I see new online programs pop up promising to “redefine performance” or “unlock elite potential.”

They come with colour-coded spreadsheets, science-sounding words, and exercises you’ve never heard of.

And yet I’ve coached athletes who’ve reached HYROX World Championships by doing the basics really, really well.

“Progress doesn’t come from fancy programming. It comes from consistency, intent, and effort.” — Coach Grimmy


1. The Problem with Over complication

Too many people fall into the trap of more = better.

They chase the next “advanced” protocol, or think progress hides behind a paywall or an algorithm.

But here’s the truth: the body doesn’t know “fancy.” It knows stress, adaptation, and recovery.

If your squat, run, or carry improves your performance improves. Simple.

Functional fitness is built on movement patterns, not gimmicks: pushing, pulling, hinging, squatting, carrying, and running. These are the foundations of strength, endurance, and longevity the things you’ll need whether you’re chasing a podium or just trying to stay fit for life.


2. Functional Fitness is the Real Hybrid

HYROX, CrossFit, obstacle racing they all reward function over flash.

A solid lunge beats a fancy snatch variation when you’re 6km deep into a race.

Functional fitness doesn’t mean random workouts it means purpose-driven training that connects movements to performance.

At SISU, our athletes don’t train muscles we train movements and energy systems.

That’s what allows them to:

  • Push harder without redlining
  • Move efficiently under fatigue
  • Recover faster between zones

Because the best training doesn’t just look good on paper it works under pressure.

Athlete doing heavy farmer’s carries through a gym corridor, chalk dust in air
Athlete doing heavy farmer’s carries through a gym corridor, chalk dust in air

3. The Power of Simplicity

You can build elite fitness with:

  • A barbell
  • A sled
  • A kettlebell
  • A running track

The key is how you use them.

Sleds teach grit. Carries build posture. Wall balls test endurance.

When athletes come to me asking for “something new,” I often give them the same movement but with a new intent.

Try doing a 10-minute EMOM of 10 wall balls + 10 calories SkiErg. Simple, not easy.

You don’t need complexity — you need clarity.

Take on the 100 Wall Ball Rep Test


4. Data Doesn’t Lie

You can argue with trends, but you can’t argue with results.

I’ve seen beginners hit personal bests, lose weight, and finish HYROX races just by training 4x per week with well-structured functional workouts.

The “fancy” stuff might look good on social media but the basics? They build bodies that last.

“You can’t outsmart the work. You’ve just got to do it.” — Coach Grimmy, SISU Fitness


5. The SISU Mindset

Functional fitness reflects life unpredictable, demanding, sometimes uncomfortable.

It doesn’t promise shortcuts. It builds resilience, one rep at a time.

That’s the SISU mindset: toughness built through doing what matters most, even when it’s not shiny or new.

When the sled feels heavy, you won’t be saved by complex programming.

You’ll be saved by your conditioning, your confidence, and your ability to keep going when it burns.

And that’s what functional fitness gives you the ability to stay in the fight.

Matthew Grimshaw

Matt Grimshaw — known as Coach Grimmy — is the founder of SISU Fitness, a HYROX-affiliated gym coaching athletes from first-timers to world podium contenders. He blends functional fitness science with SISU grit to help you train, race, and perform at your best.

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