Derek Martina

Fitness Writer, Not One Rival

Derek Martina - Not One Rival Contributor

Derek is a fitness enthusiast, author at Not One Rival, and contributor on He has over 10 years in the game and having lost more than 40 pounds, he’s undergone his own body transformation and knows a thing or two about what works and what doesn’t.

Always eager to share his knowledge and firsthand experiences, he’s here to provide honest, down-to-earth advice to help you achieve your own fitness goals.