Killer Strength

Welcome to Killer Strength – where discipline, grit, and growth collide.

KAYMEN SMITH | PERSONAL TRAINER & BOXING COACH

I'm Kaymen, the founder of Killer Strength. As a certified Personal Trainer and dedicated Boxing Coach, I’ve made it my mission to help individuals build not just physical strength, but the mental toughness to match.

With a background in boxing and strength training, I’ve seen firsthand how fitness transforms lives – inside and out. Killer Strength was born out of that passion: a training philosophy that blends raw power with technical skill, mindset with movement.

Whether you’re stepping into the gym for the first time or chasing peak performance, I’m here to guide you. My coaching style is real, results-driven, and tailored to your goals. No gimmicks – just hard work, expert support, and a commitment to helping you become your strongest self. Let’s build strength that lasts.

What i can help you with

SUCESS STORIES

REAL PEOPLE, REAL RESULTS

Justin Dee

Fighting fit! & full mobility

"I started with kaymen a few years ago just to get in good shape. As I’ve had many surgeries we had to work around these. 2025 he came up with a plan to get me back into an mma fight which I thought was impossible! We accomplished this with 7 month! And never felt so ready for a fight! Kaymen has an extensive knowledge across all training platforms from conditioning for sport specific or rehab training . Kaymen can get you to where you want to be regardless of your goals"

— Justin Dee

James Bamborough

Boxing

"Haven’t boxed proply in 10 years and Kaymen has made it like I’ve never left, Kaymen constantly keeps you working to reach your goals no matter what that would be. Highly recommended wouldn’t go anywhere else 🥊"

— James Bamborough