Jack Griffiths Performance

Home
United Kingdom
England
Jack Griffiths Performance

My name is Jack Griffiths, a 1-2-1 Body Recomposition Personal Trainer.

📍 Basingstoke's best Body Recomposition Personal Trainer
💪🏼 Guiding men & women through complete body and lifestyle transformations
📈 An approach tailored to you, designed for success in the fastest timescales
👇🏼 Enquire now I started coaching in 2019 after going through my own fat loss transformation and seeing all areas of my life that began to change. Since starting coaching, I've helped a sign

ificant number of men and women go through complete mental and physical transformations, many of which they would have never thought were possible.

22/10/2025

17kg down and the fittest and healthiest he’s been to date 🙏🏼

When Barrie and I first started working together, he’d hit 125kg on the scales and knew it was time to make a change. His extremely busy job meant his own health had taken a back seat for too long - to a degree, it felt like now or never.

For Barrie, there was definitely an element of motivation around looking better, but a lot of this was also focused on his health and how he felt day to day. By creating momentum around other areas of his health, he also wanted to commit to using that drive to quit smoking for good.

As someone that had never stepped foot in the gym before, we had to build Barrie’s confidence block by block. By giving him structure and guidance around his exercise, his strength very quickly improved and it’s safe to say he’s now the strongest he’s ever been.

We also looked to put in place a plan around nutrition that was realistic with the demands of his work. Spending a lot of hours on the road, we knew there were limitations, so instead of working against them, we leant into want he could do, and slowly started to improve each week on that.

To be just under three stone down in 8 months, attending the gym three times a week, more active than ever and cigarette free is a huge achievement for Barrie. Without a doubt, all markers of his health and fitness have improved greatly.

Ultimately, it didn’t come down to luck. It came down to structure, accountability and a commitment to make a change.

If any of this resonates with you, feel free to reach out and I’d be happy to have a chat.

16/10/2025

Spending too much time on the treadmill or cross trainer? 😬

Avoiding the weight section, and sticking with a select few machines that you’re comfortable with?

If so, you’ll be leaving a significant amount of progress on the table.

Building a toned and defined body requires muscle. As you strip the fat away, you need to have foundations that’ll give you the shape further down the line.

This will come from strength training.

Following a structured plan, with clear systems on how to continue progressing, and keeping your technique in check.

It’s natural to stick with what you know and stay within your comfort zone. But, if you want to build the body you really want, it’s time to make a change.

13/10/2025

It’s often said that if you take weight loss jabs, you should expect to lose muscle mass along the way.

While it’s true that being in a calorie deficit can lead to some loss of muscle and strength, this response isn’t unique to GLP-1 medication - it’s the same physiological process that occurs during any form of weight loss.

Here’s what many people don’t realise, and trainers won't tell you: reliable studies have shown that when resistance training and a high-protein diet are combined with GLP-1 use, individuals preserve, and in some cases even increase, muscle mass just as effectively as those losing weight without the medication.

The real takeaway? If you’re using GLP-1s, pairing them with a well-structured, progressive strength training routine and a diet high in protein is essential, both from the perspective of aesthetics and also longevity and health.

Weight loss and some degree of muscle loss tend to go hand in hand, but the evidence is clear. With the right training and nutrition strategy, you can protect your muscle, improve your strength, and achieve a leaner, healthier physique regardless of whether you’re using the jabs or not.

If you have any questions about maintaining or starting a resistance training programme whilst using GLP-1 medication, please feel free to reach out.

10/10/2025

Not knowing what or how to move forward towards your goals is incredibly frustrating.

And that's why I've created this 1-2 minute free quiz to help you understand what's holding you back and provide clear instructions on how to start seeing results.

Take the quiz with the link below now 🔍

https://yavs90ctp56.typeform.com/to/yPGIcX4D

09/10/2025

Peak Physique: The 12-Week Transformation Challenge 💪🏼

Over the last 6 years, I’ve helped a significant number of men and women transform their lives.

From lacking confidence, low in energy, struggling with diets and anxious in the gym, they’ve got to a place where:

✅ They love what they see in the mirror
✅ They’re a role model for their family
✅ They have finally found a way of eating that delivers results long-term
✅ They wear clothes they feel great in

Within Peak Physique, you’ll work 1-2-1 with me, receiving a tailored diet plan, customised workout programme, and accountability and support throughout your journey.

This is everything you need to finally get off the sidelines and make sure that 2025 was your year after all.

If you’d like to find out more, drop me a message with the words “Peak Physique”, and I’ll get back to you with more information.

Note - some of the results below were longer than 12 weeks, but reflect what’s possible when committing to transforming your health and life 💪🏼

09/10/2025

It’s true... losing fat once you’re over 30 can feel harder. But not for the reasons most people think.

A lot of people blame their slowing metabolism for their lack of progress, but in reality, that’s rarely the issue.

Even if your metabolism did drop and you burned, say, 200 fewer calories a day, do you really think that’s what’s stopping you from seeing results? Probably not.

The truth is, life after 30 looks different.

Ten years ago, at age 21, I lived at home, had a straightforward 9-5, no children, and barely any real responsibilities. Life was pretty easy-going.

Fast forward to now, and it’s a whole different story. And if you look back at your own 20s, your situation is probably different too.

Yet, despite that, here’s what most people still do…

They try to follow the exact same routine that worked when they were 20–25 and wonder why it doesn’t work for them anymore.

Sure, if you could hit the gym 5-6x a week, do cardio 3-4 times, prep every meal, skip family dinners, keep your career moving, let your partner handle the housework, and never get tired… you’d get results easily, right? 😅

But let’s be honest, how long is that going to last? 😂

Here’s the real problem: it’s not your metabolism or your body changing. It’s your lifestyle.

So instead of going from zero workouts to five, what if there was a middle ground?

Instead of cutting out all “bad” foods and trying to prep breakfast, lunch and dinner, what if you learned portion control and focused on protein, while still eating with your family? 🤔

Getting leaner in your 30s, 40s, and beyond is 100% possible.

You just need a plan that fits your life as it is now, not what worked when you were 21.

I've got a few spaces open for 1-2-1 coaching, both in-person and online. If you'd like to see if we'd be a good fit, send me a message, and let's have a chat.

08/10/2025

This is what TEN stone of weight loss looks like 😱

When Emma & Stu first reached out to me, they felt like they'd tried it all. From Weight Watchers, Slimming World, and most other mainstream diets, nothing ever delivered the long-term results they really wanted.

Working together, it became clear why other diet attempts hadn't led to the weight loss they wanted, and we needed to create a nutrition plan that moved away from quick fixes and over-restriction.

Alongside that, they started coming into the gym to see me twice a week, focusing on building muscle and strength, alongside their new diet plan, to start moving them forward.

Fast forward to today, and they've lost an incredible, combined 10 stone of weight (over 65kg!).

Results like this don't happen by accident. With the right plan, accountability and systems that work, you truly can completely change your life.

If you'd like to find out more about working with me, send me a message with the word 'October' and I'll reach out for a chat.

02/10/2025

Weight loss injections (GLP-1 agonists) work by slowing digestion, reducing appetite, and increasing satiety. Many people describe them as finally quieting the constant “food noise” they’ve battled with their entire lives.

Naturally, many trainers and coaches are against them, arguing that they’re a shortcut with unacceptable risks. But is that a fair assessment, or a biased one?

Here’s what we know:

* They work: Clinical trials show average weight loss of 10–15% of bodyweight, improved cardiovascular health, and better cholesterol and blood sugar control.

* There are side effects: Common issues include nausea, severe stomach cramps, constipation, and diarrhoea. More serious, but less common risks include gallbladder problems, pancreatitis, and kidney complications.

* Long-term data is limited: Most studies only cover around five years of use, so we don’t yet know the effects of taking these drugs 10–20 years down the line. Still, for many people, the potential benefits outweigh the known risks.

* Muscle loss: Many trainers will shout from the rooftops that taking these drugs leads to significant muscle loss. However, studies have shown that when combined with resistance training and a high protein diet, muscle loss is not more significant than an individual on a weight loss journey who’s not taking GLP-1’s.

So where does that leave us?

In my view, these medications certainly have a time and place. Writing them off as “cheating” ignores the life-changing impact they can have for some people, who feel they have no other options left. At the same time, using them to drop a stone before a wedding or holiday, to me, feels wrong and misses the point of who these drugs were truly designed for.

The reality is this: GLP-1s are here to stay. As trainers, our role isn’t to shame their use, but to help people make informed decisions, understanding the risks, their current position, and whether this tool genuinely serves their long-term health.

Have a question? Drop a comment, or send me a DM, and I’d be happy to chat.

01/10/2025

If I said this to you, would you believe me?

Would you think I had the right strategy, the right tactics, a plan to overcome challenges, and the termination to follow through? But for some reason, I was deciding against it?

You’d probably think I was optimistic at best, and you’d be right.

But ironically, when it comes to fat loss, I hear this all the time:

“I know what to do, I’m just not doing it.”

Humans are selfish. We act in a way that serves our own best interests, and I’ve never met anyone that has a clear path ahead of them to improve their life, but deliberately chooses not to walk it.

The truth is, you don’t know what to know. You might know some of the information, but if you don’t know how to correctly apply it to your unique goals, circumstances and challenges, then you’re missing the key value.

The guidance I give my clients is more than just information. It’s a unique road map, it’s clarity, structure, accountability and drive.

If you would like my help with finding a tailored solution for you, drop me a message and I’d love to chat.

30/09/2025

My next 12 Week Transformation Challenge, Peak Physique, is starting soon in October 💪🏼

If you want to lose up to 20lbs of fat, increase your confidence and energy, and to fit into the outfits you’ve been avoiding, Peak Physique might be for you.

If you’re looking for coaching that has a 1-2-1 approach, with someone that’ll tell you what you need, not what you want to hear, to get you to your dream result, I’d love to have a chat.

Drop me a message with the word “October” for more info.

24/09/2025

When I first started going to the gym, I was working hard, but it wasn’t leading anywhere.

Looking back, I can see something that was clearly missing.

Intent.

Not just in how I put together my programme, but also in the way that I was training too.

So many people walk into the gym and hope for the best. They go from one machine to the next, give a little bit of effort here and there, and wonder why they can’t see any results.

It’s not enough.

But to be honest, you can have the best programme in the world, but if you don’t know how to execute it properly, you’ll always feel like you’re spinning your wheels. And this is the problem for most people.

There’s no shortage of programmes online, or from ChatGTP, but most people don’t need yet another plan or list of exercises. They need to know HOW to train.

I can say, confidently, that I could get 90% of the gym population onto a hack squat and get them to beat their PB by weight and reps by a significant margin, versus what they’ve achieved training on their own.

The issue is, if you’re always training below your true potential, it’s natural that your results will reflect that.

Learning how to train properly is a skill. It takes time, and it takes exposure at working at a certain level, to be able to safely replicate that time and time again.

I’ve got space for a very limited number of 1-2-1 (one-off) Learn-to-lift sessions available from Basingstoke. If you want to take the first step to learn how to execute your training to maximise your results, drop me a message and I’ll send you the details on how you can book in.

Address

Reading
England

Telephone

+447703407565

Website

https://linktr.ee/jgfitnesspt

Alerts

Be the first to know and let us send you an email when Jack Griffiths Performance posts news and promotions. Your email address will not be used for any other purpose, and you can unsubscribe at any time.

Contact The Business

Send a message to Jack Griffiths Performance:

Shortcuts

Want your business to be the top-listed Media Company in England?

22/10/2025

16/10/2025

13/10/2025

10/10/2025

09/10/2025

09/10/2025

08/10/2025

02/10/2025

01/10/2025

30/09/2025

24/09/2025

Address

Telephone

Website

Alerts

Contact The Business

Shortcuts

Share