Want to Build Muscle and Stay Athletic?
That’s exactly what the Diesel TREIGN program delivers.
Diesel TREIGN is built around a performance-first approach that develops strength, power, and conditioning, all while improving your body composition. This is where form follows function—and function means results.
With programming backed by 20+ years of training experience and over a decade of professional coaching at top-tier private facilities across the U.S., this isn’t guesswork. This is a proven system that delivers—if you’re ready to put in the work.
Each training block runs in 6–8 week mesocycles, designed to keep you progressing without burnout. You’ll train 6 days a week, with each session targeting specific elements that align with the current phase of the program—so you’re always moving with purpose.
Whether you come from an athletic background, bodybuilding, powerlifting, HYROX, or CrossFit, this training style will feel familiar—but reignited. It’s a system that fuels performance while carving out a physique that performs and looks the part.
Welcome to TREIGNING.
Results-driven. Performance-built. Diesel-level.
Sign up for an annual membership and save. Let’s get to work.
I’ve been on this training journey for over 20 years—and I’m still just as passionate today. By combining deep knowledge with real-world experience coaching clients, my goal is to help you get the most out of your training—maximizing results while keeping it fun, challenging, and sustainable for the long haul. Start your TREIGNING journey today!
We TREIGN to dominate our fitness goals in comprehensive fashion. Let's get it!
Start My 7-Day Free TrialExecutive
Verified Athlete"I have worked with some truly brilliant coaches, but I have never found a combination and approach as amazing as Rein’s. He has helped me push beyond my own limitations and I look forward to being a part of team TREIGNING for a long time to come."
Neuroradiologist
Verified Athlete"Rein is very professional, knowledgeable and clearly passionate about helping his clients reach higher levels of performance, through thoughtful programming and careful attention to each individual’s goals. I have recommended Rein to friends and anyone who wants to show up to life stronger."
Lawyer
Verified Athlete"Rein is not your typical trainer. I have never had a trainer who is more passionate and knowledgeable about fitness, health and well being. His talent, attitude, dedication and drive are unmatched."
When you join a team you’re getting more than programming, you’re joining an online community.