Four Pillar Fitness Insights Banner featuring a 2D illustration of Strength Coach  Stephan Earl
Four Pillar Fitness Insights Banner featuring a 2D illustration of Strength Coach  Stephan Earl

4P Fitness Insights

Explore practical, science-backed insights on strength, mobility, nutrition, recovery, longevity, and today’s biggest fitness trends. Use the category filters or search bar below to quickly find the guidance, answers, and topics that matter most to you.

Subscribe to the Insights 🎧 Podcast

Prefer to listen? Subscribe on Substack for practical conversations about Strength, Mobility, Nutrition, Recovery, and building a body that stays capable for life. New episodes will be delivered directly to your inbox.

Trends and Myths Stephan Earl Trends and Myths Stephan Earl

Creatine After 45: What the New Research Actually Says

Creatine isn’t just for bodybuilders. New 2026 research in adults ages 45 to 65 raises new questions about strength, lean mass, muscular endurance, body composition, and cognition, including possible benefits without structured exercise. Coach Stephan breaks down what the research actually shows, what remains uncertain, and how creatine fits into a smart strength and longevity plan.

Read More
Training Stephan Earl Training Stephan Earl

Introducing the Four Pillar Fitness Insights Podcast

The Four Pillar Fitness Insights Podcast is now live on Substack. Coach Stephan Earl introduces the new video podcast, explains why he created the Four Pillar Fitness system, and shares how Strength, Mobility, Nutrition, and Recovery can help adults cut through fitness noise and build a clearer path to long-term health and capability.

Read More
Strength Stephan Earl Strength Stephan Earl

Why You Feel Strong One Day and Weak the Next

Why does the same weight feel easy one day and heavy the next? Learn how sleep, stress, food, hydration, accumulated fatigue, menstrual symptoms, and workout setup can affect daily strength, plus how to adjust a difficult session without mistaking normal performance fluctuations for lost progress.

Read More

Visit the 4P Fitness PRO Shop

Apparel

Drinkware

Fitness Gear

Instant Download

Gear up with fitness-inspired apparel, drinkware, journals, instant downloads, and a little gym and coach humor for the people who train hard, recover smart, and still know how to laugh between sets.