Flexible Health

Flexible Health Flexible Health · Hamilton NZ
Nutrition + training that fit your life
No banned foods. No finish line

04/08/2026

The mistake was never cardio. It was thinking cardio was the plan.

I get it — the second you decide to lose weight, cardio's the obvious move. It burns calories in the moment, it feels productive, and it's what we've all been told fat loss looks like. I'm a natural runner; even at my heaviest I could knock out a 5km. But it was always when I was trying to lose weight — and if you've read my story, you know how that went.

Here's what nobody mentions: your body is annoyingly efficient. The more you repeat the same cardio, the better it gets at it, and the fewer calories it costs you to do the same work. Stack that on top of an aggressive calorie cut and you start burning through muscle, not just fat. Less muscle means a lower resting burn — so the very thing you're doing to lose weight quietly makes it harder. That's the trap.

Muscle is the part everyone skips. It's active tissue — it costs energy to maintain all day, whether you're training or flat out on the couch. More muscle, higher resting burn. It's also where your food goes to work instead of into storage: better insulin sensitivity, steadier energy, and more room to actually enjoy your food without it working against you.

Build it consistently and something quietly brilliant happens — the scales barely move, but you've dropped a dress size or two. That's body recomposition, and it's the whole point.

Cardio isn't pointless. A brisk walk or easy jog is great for recovery and heart health — it just belongs in a supporting role, not the lead. Cardio supports. Muscle carries you.

Full article — including where progressive overload and protein come in.

Cardio alone rarely delivers lasting fat loss. Here's why resistance training — not more running — is the real key to sustainable, long-term results.

31/07/2026

I started Karl Tatterson Nutrition just over a year ago. It went ok — but something was missing. I never really connected with it as a brand, or with the message I was trying to get across.

So over the past several months — through some big changes in my personal life, a lot of brainstorming, and a lot of swearing at a website that refused to behave — I rebuilt it. And it came down to three things I needed the brand to stand for.

Nutrition. It's not set-and-forget. It's choices, every single day. But it's also not something to be rigid about — we have to learn to be flexible, and to know it's ok not to be perfect.

Training. I can't overstate how important resistance training is for your health, now and decades from now. We reach for the running shoes the second we want to "lose a bit of weight" — but it's rarely consistent, and we massively overestimate it. Exercise is only about 10–15% of the calories you burn in a day. Muscle is the part that carries you.

Kitchen. Here's the irony: I'm a qualified chef, and at my biggest I still had no idea how to use that to actually fuel my body. Flexible Kitchen is under construction, but it's where I'll share my own recipes and tips to make the whole thing easier.

Three big changes — and one more, in how I coach. You won't find a locked-in plan here. Every plan except Foundations (that one's by design) is cancel-anytime. I'm not here to put you on something rigid and walk away. My own journey has taken years, and it's still going — so why would I run a formula on you that never once worked on me?

Flexible Health. Same me, different approach.

Come see what we're building →

Habit-led nutrition and training coaching for real, lasting change — no restriction, no lock-in contracts. Built by a coach who's lived it.

I have one non-negotiable habit that has impacted my health more than almost anything else. 👇I make my lunch in the even...
18/02/2026

I have one non-negotiable habit that has impacted my health more than almost anything else. 👇

I make my lunch in the evening, while I’m making dinner.

It sounds simple, but it’s the ultimate cheat code for staying consistent. Here’s why this 10-minute overlap is a game-changer:

✅ The Plan is Set: I wake up knowing exactly how I’m fueling my body. No decision fatigue or midday guessing.
✅ Strategic Fueling: It allows me to plan my intake around my training (High vs. Low days).
✅ Morning Freedom: It gives me back precious time in the morning to focus on getting the kids sorted or smashing out a session in the gym.
✅ Mental Clarity: I start the day "switched on" and ready to go, rather than being bogged down by what I’m going to eat.
✅ No More Crashes: I’m guaranteed stable energy all day. That means no 3 PM energy slumps and no "binge eating" at night because I under-fueled during the day.

If you feel like you’re constantly driving on reserve or making poor food choices because you’re rushed, start here. Make your lunch tonight.

Not sure what to put in the container?

That’s where the guesswork stops. My Flexible Kitchen Framework gives you the personalized blueprint, the macro numbers, and the meal ideas you need to fuel correctly.

Click the link in my bio to get started.

I THOUGHT I WAS LIVING THE DREAM.🧠My man cave is gone. My garage is now a fully functional gym where I train clients who...
08/12/2025

I THOUGHT I WAS LIVING THE DREAM.

🧠My man cave is gone. My garage is now a fully functional gym where I train clients who are starting their own health journey. I went from being a consumer to a creator. I'm a qualified Health and Nutrition Coach now, still studying, and the healthiest I've ever been.

💪 It’s not the way I look, but the consistent energy I have for my kids. I stopped fueling my body with guesswork and processed food, and started mastering my nutrition to ensure I'm present and setting a healthy example. I replaced the pool table with weights, and the dartboard with a sustainable nutritional plan.

If you're still stuck feeding your body the wrong fuel and feeling unmotivated, I created the exact foundation I needed 8 years ago.

My Flexible Kitchen Framework cuts through the nutrition confusion and gives you the exact personalized blueprint for mastering your nutrition —not just your fitness. It’s the simple roadmap to change your habits, not just your diet.

Click the link in bio to learn how I can build your personalized fuel plan and reclaim your energy.

It has been a full-on week, and honestly, the calendar had me scheduled to train this morning. But I just didn't have it...
28/11/2025

It has been a full-on week, and honestly, the calendar had me scheduled to train this morning. But I just didn't have it in me, and you know what? That is okay.

It took me a long time to accept that knowing your body well enough to recognize when you need a "chill pill"—even just for the morning—is essential. I used to think that achieving health goals meant relentlessly pushing myself every moment of the day.

Here's the truth:

You won't derail your entire diet or health goals in one moment or one weekend of bad eating or missed exercise.

But if you repeat that pattern every weekend, the lack of consistency will stop your results over time.

What's just as important as giving yourself permission to rest is understanding why you needed it.

Take a moment to reflect: Was it a lack of sleep? Did you under-fuel the day before? Is stress high? Knowing the reason helps you stay kind to yourself, but also puts you in a position to put a plan in place if it happens again.

I'll still get a session in today, but I'll make sure I look after myself throughout the day to put myself in a good mental and physical space to smash a good one later. 💪

Happy Saturday! Enjoy the reset.

Have you guys tried Kumara Toast?It's such a simple, delicious game-changer:Slice kumara (sweet potato) lengthways about...
27/11/2025

Have you guys tried Kumara Toast?

It's such a simple, delicious game-changer:

Slice kumara (sweet potato) lengthways about half a centimetre thick.

Give it a very light coating of olive oil and season both sides.

Toast it in your toaster on high—you might need to run it a couple of times until it starts to blister and soften in the middle.

It's a great alternative to bread, giving you additional fibre and nutrients to go with your eggs or avocado at breakfast!

Food ideas like these, along with personalized portion sizes and macro-calculated meal swaps, are what The Flexible Kitchen is all about.

Ready to stop guessing and start fueling smarter?

Check out The Flexible Kitchen Program on my website, or message below "KumaraToast" and I'll send you the direct link.

Most clients tell me they struggle with their diet, and while paying attention to food labels is key, knowing the differ...
24/11/2025

Most clients tell me they struggle with their diet, and while paying attention to food labels is key, knowing the difference between two seemingly identical products is what really moves the needle.

Take yogurt, for example. In the photos, we have two seemingly healthy options based on price and front-of-pack marketing.

But the Nutritional Information Panel (NIP) tells a completely different story:

The Sugar Difference: The plain Greek yogurt has next to no carbohydrates or sugars. The vanilla bean Greek yogurt, however, has almost 10 grams of sugar per 100 grams!

The Portion Trick: The manufacturer increases the portion size recommendation on the vanilla yogurt (e.g., 160g) to increase the protein levels, making you believe it’s a better product. A 160g serving could give you 13g of protein, but also 15g of sugar.

The Reality Check: When you compare both products based on the fair 100-gram column, you'll find there's only about a 1.5-gram difference in protein levels, but the sugary option has DOUBLE the calories.

This is how unexpected calories sneak into your day and sabotage your deficit. If you think those few extra grams of protein are going to make the difference to your overall daily intake, you are the exact consumer food manufacturers are marketing toward.

So, here’s the recap:

Look at the 100g Column: This is the only way to fairly compare products.

Keep Sugar Low: Choose the lowest sugar option possible. Add your own natural flavorings like berries.

Don't Get Fooled: High-protein claims are often there to make you buy their more expensive, less nutritious product.

Check out my article on how to read the NIP label for more information on spotting these tricks!

https://www.karltattersonnutrition.co.nz/blog/post/152541/reading-nutritional-labels-your-ultimate-guide-to-smarter-choices-in-new-zealand/

Home made Satay chicken pizza tonight for dinner!Dough is super easy - just self raising flour and plain yoghurt!
07/11/2025

Home made Satay chicken pizza tonight for dinner!

Dough is super easy - just self raising flour and plain yoghurt!

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