Honest

.01

About the Gain Check

The Gain Check cuts through the noise.

Real reviews, science-backed training advice and supplement guides for people who take their progress seriously.

Whether you’re chasing strength, better endurance or just trying to figure out which supplements are actually worth it — you’re in the right place.

I’m Mikolaj. I’ve been training seriously for 3 years, focusing on hypertrophy, strength, and real-world nutrition that fits a busy schedule. I’m not a certified personal trainer — I’m a guy who’s spent years in the gym, made mistakes, figured out what works, and wants to share it. Everything on this site is based on personal experience and backed by research where possible.