Push your limits.
Elite training for everyone.

Aleš Ogrinc built his coaching philosophy in special forces — an environment where physical unpreparedness was simply not an option. This experience, complemented by 30+ years of working with top athletes and recreational athletes, became the foundation of F4B: a systemic approach to physical preparedness that is hard to find elsewhere.

At F4B, every program is based on methods that have been tested under extreme conditions — tailored to your biomechanics, goals, and lifestyle. There's no guesswork, no one-size-fits-all solutions. Just a disciplined system that delivers measurable results.