Johan Latsky

About the Author

I’m Johan Latsky, the creator of CoreSifu. I hold a Bachelor of Science in Agriculture (BScAgric) and focus on studying and writing about exercise physiology, human performance, and nutrition.

Through CoreSifu, I translate scientific research into practical, easy-to-understand explanations that help readers better understand their bodies.

I use a combination of scientific literature, textbooks, and AI-assisted research tools to help organise and clarify complex topics. All content is reviewed and shaped through my own understanding and interpretation before publishing.

Start Here

Explore the core topics in science-based fitness and physiology.

Featured Evergreen Guides

start end
07/30 2026
Does Sprinting Help With Judo and Karate? Everything You Need to Know Before You Start

Does Sprinting Help With Judo and Karate? Everything You Need to Know Before You Start

publish on July 30, 2026

Does sprinting help with judo and karate? Discover how sprint training improves explosive power, speed, footwork, conditioning and athletic performance for martial artists.

start end
07/29 2026
Why Do I Feel Energized Before Running? Understanding the Pre-Run Energy Surge

Why Do I Feel Energized Before Running? Understanding the Pre-Run Energy Surge

publish on July 29, 2026

Why do I feel energized before running? Learn why some days you feel unstoppable before a run and how your brain and body prepare you for peak performance.

start end
07/16 2026
How to Be a Morning Person Naturally: Science-Backed Tips

How to Be a Morning Person Naturally: Science-Backed Tips

publish on July 16, 2026

Learn how to be a morning person naturally with simple science-backed habits that improve your sleep schedule, boost morning energy, and help you wake up feeling refreshed.

start end
07/09 2026
REM Sleep vs Deep Sleep for Recovery: How to Get the Most Out of Your Sleep Cycle

REM Sleep vs Deep Sleep for Recovery: How to Get the Most Out of Your Sleep Cycle

publish on July 9, 2026

REM Sleep vs Deep Sleep for Recovery: Discover which sleep stages matter most for physical repair, memory, performance, and better health.

start end
07/07 2026
Is Creatine a Steroid? The Truth About Creatine vs Steroids

Is Creatine a Steroid? The Truth About Creatine vs Steroids

publish on July 7, 2026

Is creatine a steroid? Learn the truth about creatine vs steroids, how they work, their benefits, risks, and which option is better for natural muscle growth.

What Most People Get Wrong About Their Body

Fitness Myths, Questions & Answers