Our Mission

Invest in yourself. There is no safer investment nor one that will give greater returns.

About us

I’m Leo Hamel, founder of Leo Hamel Fine Jewelers & Jewelry Buyers and Leo’s Fitness Lab.  At Leo’s Fitness Lab, we are dedicated to eliminating wasted effort by guiding our clients to their goals through specialized personal training, nutrition, and mentorship. We want to help you achieve your fitness ambitions faster than ever before with our high-tech, high-intensity computer-controlled resistance training.

We’re dedicated to changing the way you exercise, so you can change your life.

High intensity interval training San Diego
Leo Hamel Sr. in 1951

Leo’s Fitness Lab is dedicated to my father, Master Chief Leo Hamel Sr. (seen above) who served as a Frogman in the Navy’s Elite Underwater Demolition Teams, the direct predecessors to modern day Navy SEALs.

As a competitive bodybuilder, my father taught me the importance of weight training for fitness and fat loss. I’ve carried this knowledge with me throughout my life.

I previously worked out with weights, aerobic machines, and took classes at traditional gyms but never quite achieved the results I was looking for. I lost weight, but lost muscle as well as fat, so I simply became a smaller version of my old self. Sure, I wore a smaller pant size, but I was “skinny fat.” I never achieved the chiseled body that I desired. After reading the book, Body by Science, I discovered the reasons why I was failing.

I searched for, and found, the scientifically based technology that was necessary to achieve my goals and brought them all together in one place. I’m so excited to share this revolutionary technology with all of San Diego! 

I believe so much in our combination of high-tech focused exercise equipment and targeted personal training that it’s the only workouts I do now.

Our Certified personal Trainers

Meet our knowledgeable & friendly personal trainers

Kevin - Fitness Manager


Kevin is our skilled Fitness Manager, and is a constant source of encouragement for all of his clients. He is a certified National Academy of Sports Medicine (NASM) trainer, and 5 years ago he became a trainer in pursuit of changing lives and motivating everyone to find the best versions of themselves. His personal goal is to push everyone to their maximum potential through fun and innovative workouts. When he isn’t helping others find their joy, he loves surfing, playing basketball, and hunting for the best new food spot across San Diego!

Trainer Andrea Headshot


Andrea is a NASM Certified Personal Trainer and Women’s Fitness Specialist. She is experienced in both personal training and group fitness classes, with emphasis in functional training and weight lifting. She is passionate about building habits that create a healthy lifestyle to support mental and physical wellbeing, including a balanced approach to nutrition and exercise.

Trainer Olivia Headshot


Olivia is one of our expert trainers here at Leo’s Fitness Lab. She earned her B.S in Kinesiology, and is certified under the National Academy of Sports Medicine (NASM). With 3 years of experience training clients of various demographics, she is pleased to be on the team, motivating and inspiring the Leo’s fitness community to live healthier lifestyles.

Beyond her experience in personal training, health and wellness have always been a huge part of her life. She began training as a ballerina at the age of four and continued to train throughout high school and college. When she’s not training clients, you’ll find her hiking, practicing Pilates, and dancing various styles.