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Welcome to Four Pillar Fitness

Four Pillar Fitness is my practical fitness philosophy built on Strength, Mobility, Nutrition, and Recovery... at every age. My coaching helps you build durable muscle, move better, fuel wisely, and recover smarter for results that last. Build strength you can feel, mobility you can trust, and habits that carry you forward so you stay Forever Fit.

Ask Charlie - Four Pillar Fitness AI Assistant Strength & Nutrition Coach Custom GPT

Ask Charlie!

Meet Charlie, Your 4PF Strength & Nutrition Assistant Coach

Charlie is my custom GPT trained to help you build strength, improve mobility, eat smarter, and recover better using my Four Pillar Fitness approach.


Together, we're here to make fitness simple, science-based, and sustainable for you at every goal and every age. To get started, simply...

Speak With Coach!

Hi I'm Stephan Earl, NASM Certified Personal Trainer, Nutrition Coach, and Corrective Exercise Specialist.

My approach to health and fitness is based on my Four Pillar Fitness philosophy, which focuses on Strength, Mobility, Nutrition, and Recovery.


I specialize in coaching people over 40. As someone over 50 myself who trains consistently, I understand the unique needs of this stage of life and how to stay strong, mobile, and confident.


If you want to feel stronger, move better, and build long lasting habits, I'm here to help. Schedule your Personal Training Assessment below to take the next step.



Four Pillar Fitness Insights

The Truth About Cold Plunges: Benefits, Risks, and How to Do It Safely
The Truth About Cold Plunges: Benefits, Risks, and How to Do It Safely
Cold plunges are having a moment. From athletes to everyday fitness enthusiasts, people are jumping into freezing tubs hoping to boost recovery, energy, and focus. But before you dive in, it’s worth asking: what does the science really say, and how ...
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Zone 2 Cardio Made Easy: Fat Burn, Endurance, and Joint-Friendly Fitness After 40 written by Stephan Earl author of Four Pillar Fitness
Zone 2 Cardio Made Easy: Fat Burn, Endurance, and Joint-Friendly Fitness After 40
You’ve probably heard about “Zone 2” training lately. It’s showing up in podcasts, health articles, and wearable app updates. But what exactly is it, and why does it matter, especially after 40? Let’s break it down in simple, science-backed terms. T...
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Top 5 Health & Fitness Wearables for 2026 - written by Stephan Earl author of Four Pillar Fitness
Top 5 Health & Fitness Wearables for 2026
You can’t manage what you don’t measure. That’s where wearable fitness tech shines. For people over 40, these small devices can make a big difference in how you train, recover, and stay consistent. As fitness technology continues to evolve, 2026 bri...
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Creatine 101 for Women and Men Over 40: Strength, Bone, and Brain Basics written by Stephan Earl
Creatine 101 for Women and Men over 40: Strength, Bone, and Brain Basics
At 52, Mark had been lifting for years but lately felt sluggish and noticed he was losing strength despite training consistently. His trainer suggested adding creatine monohydrate. Within a few weeks, he felt stronger, more focused, and recovered fa...
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Strength After 40: A Simple 3-Day Plan to Rebuild Muscle and Protect Joints written by Stephan Earl
Strength After 40: A Simple 3-Day Plan to Rebuild Muscle and Protect Joints
You notice it on the stairs. You feel it when you lift a bag of groceries. Getting older does not mean getting weaker. With a simple plan, you can rebuild muscle and keep your joints healthy. This three-day routine is short, clear, and backed by sci...
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