Ivan-Marinov | Fit Refect

How Your Nervous System Shapes Performance, Recovery & Stress — Train the Brain-Body Connection
The System Behind Everything You can see your muscles, you can feel your heartbeat — but what you can’t see [...]
Strong Biceps: Science-Backed Exercises, Programs & Mistakes to Avoid | TK FITREFECT
Meta Description: Discover how to build bigger, stronger biceps using the latest 2023 research, proven exercises, and practical training advice. [...]
How Training Your Body Can Train Your Immune System — and How FITREFECT Brings Science to Your Daily Routine By Ivan Marinov — Fitness Personal Trainer & Athletic Coach
In the past, fitness was all about physical performance — strength, endurance, and appearance. But science is changing the way [...]