Practical & Scientific Strength & Conditioning For Fighters... Without Vomiting Your Lunch After Endless "Fight Specific" Circuits

Featured On

Conquer Your Fight Preparation

Learn how you can eliminate strength & conditioning mistakes destroying your fight performance... even if you aren't a trainer. The SSOF Underground gives you exclusive access to a collection of elite combat sports coaches and PhD researchers at your fingertips.

"It's a smart, science-backed approach to strength and conditioning that delivers real results."

Since I started the program, I've noticed a significant improvement in my conditioning during my MMA training sessions. This program has been a game-changer. It has translated directly to better performance in training. I feel more capable and confident going into my future fights, and I credit much of that to the Sweet Science of Fighting Underground. I highly recommend this program to any combat sports enthusiast looking to take their training to the next level. It's a smart, science-backed approach to strength and conditioning that delivers real results.


Jon M

MMA Fighter

Jon M

Melanie Iverson

The 8 Week Program was perfect for me to build jiujitsu strength and supplement my training for No-Gi Pans where I brought home gold! I felt like the movements translated well to those in the sport and kept the hard training for sparring. Will be recommending to my teammates and very excited to start the Farm Boy Strong Program.

No-Gi Pan Ams 2022 Gold Medalist

About Me.

Hi! James de Lacey here. I own and run Sweet Science of Fighting. Strength & Conditioning is my passion to the point I made it my career so I could help athletes like you succeed in their sport. I hold a Master of Sport & Exercise Science and have published academic research. Further, I've worked in three countries at the elite and international level of sport preparing athletes for competition. I train and compete in BJJ and created Sweet Science of Fighting to bring you cutting edge training information from myself and high-level coaches you can access with a click of a button.

Represent Us When Training

Sweet Science of Fighting Rash Guard

The Sweet Science of Fighting Rash Guard is available in short and long sleeve. Premium fit and materials in collaboration with XMartial.

Sweet Science of Fighting Taniwha Protector Guardian Rash Guard

The Sweet Science of Fighting Taniwha Protector Guardian Rash Guard is available in short and long sleeve. Premium fit and materials in collaboration with XMartial.

Sweet Science of Fighting BJJ Shorts

Insanely comfortable mid-thigh Sweet Science of Fighting BJJ and MMA shorts available in collaboration with XMartial.

Sweet Science of Fighting Taniwha Protector Guardian BJJ Shorts

The Sweet Science of Fighting Taniwha Protector Guardian BJJ and MMA shorts available in collaboration with XMartial.

Which Combat Sports Athlete Are You?

February 5, 2024

Weighted boxing gloves have been around for ages but have never become mainstream. Their main

January 23, 2024

Pad work is crucial to boxing and striking combat sports for all levels. Those who

January 8, 2024

Standard competition MMA gloves are usually too thin for anything other than very light MMA

January 4, 2024

The best way to learn how to fight is to simulate fighting in the gym,

December 26, 2023

Martial arts often carry deep philosophies and are ways to express yourself, but they contain

December 26, 2023

Humans have been grappling since time immemorial and continue to do so. Although modern wrestling

Page [tcb_pagination_current_page link='0'] of [tcb_pagination_total_pages link='0']