Build More Muscle
For A Better Body

Gaining muscle makes everything better.

Better size, better shape, better strength, better fat loss, better overall health and fitness. And nobody knows muscle-building like Dr. Jim Stoppani. Start looking, feeling, and performing your best within weeks with one of his expertly crafted mass-gaining programs.

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JimStoppani.com has a program geared towards just about any goal you have in mind. When it comes to packing on mass, although there are many muscle-building programs to choose from, one of my all-time favorites is Down and Up Mass, which I've completed multiple times.
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Programs Backed-By-Science

Periodization Innovative Rep Schemes

No one rep range is best for building muscle. Low reps with heavy weight, high reps with light weight, and everything in between – it takes all of them properly intertwined to maximize size gains. JimStoppani.com programs utilize all major periodization models to keep the reps changing and your muscles growing.

Intensity Intensity-Boosting Techniques

You can’t build new muscle in stubborn areas without pushing the boundaries of intensity and getting creative. Dr. Stoppani does this through unique applications of time-tested training tools like supersets, drop sets, rest-pauses, staggered sets, giant sets, pre-exhaustion, and many more.

Variety Variety by Design

A boring program is usually an ineffective one. Yet senseless change in the name of “muscle confusion” is a sure way to halt progress. Dr. Stoppani incorporates variety in all areas of program design – but it’s purposeful variety, not random, and it’s all rooted in scientific research. When the variety is intelligent, you get sustained progress and fewer plateaus.

Stay on Track with Apps

Consistency is your key to success. User-friendly JimStoppani.com mobile and desktop applications will help hold you accountable. 

1) Set Your Schedule

Make an appointment to train, and you’re more likely to stick to it. Use the JS calendar feature to plan workouts for the days and times that work best for you.

2) Workouts on the Go

With the JS app, your program is right there on your phone. Just take it the gym and follow along, set by set.

3) Virtual Personal Trainer

Have a question about an exercise or training technique? Tap any link between sets for a quick explanation.

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Nutrition And Supplements

Build more quality muscle with simple yet effective meal plans and top-selling supplements.


Adding size to your frame is as simple as following Dr. Stoppani’s 9 Muscle-Building Rules and implementing any of his step-by-step meal plans. And we’re talking about lean gains here, thanks to optimal macronutrient guidelines that can be customized to your individual body type. Enhance your diet with the JYM System (Pre JYM, Post JYM, Pro JYM), JYM Support Stack (Vita JYM, Omega JYM, ZMA JYM), and specialty products like Mass JYM and Alpha JYM to promote full muscle recovery and maximize results. 

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I have done many of Jim's programs. The one thing I've learned is that with a little adapting you can adjust any program to fit your goals. The one program I always come back a couple of times a year to is Down and Up Mass. There's just something about the variety of training that really works for me.
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Tools to meet your goals

Mobile-app Industry leading fitness mobile app

Track every workout – sets, reps, weights – with the user-friendly Jim Stoppani fitness app. Set your schedule with the calendar feature, and bring your program to the gym with you.

Coaching Coaching And Motivation By Dr. Jim Stoppani

Answering questions through social media day and night and hosting live tutorials almost daily, Dr. Stoppani is your virtual personal trainer.

Army The JYM Army

The strongest online fitness community – that’s the JYM Army! Get help with any program or diet, post your progress pics, share your struggles. This is your fitness family!

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Lifelong Career Dedicated To Fitness

I've been training since I was 8 years old. My life has been dedicated to this field. Not only do I have a PhD in exercise physiology and a post-doctorate position at Yale University on my resume, I was also the Senior Science Editor for Muscle & Fitness and FLEX magazines for 11 years. I've been a personal nutrition and health consultant to Dwayne "The Rock" Johnson, LL Cool J, Dr. Dre, Mario Lopez, and other fit celebrities. My ground-breaking JYM Supplement Science product line, launched in 2013, brought much-needed transparency and integrity to the sports nutrition industry. With JimStoppani.com, I'm sharing all my knowledge to help you change your body, your health, and your life for the better.

Start Your Journey Today

Join JimStoppani.com TODAY!

Get unlimited access to all training programs, diets, and supplement plans and the JYM Army to keep you accountable!

• 50+ expert-designed fitness plans with more all the time.

• Daily workout plans with detailed video instructions.

• Nutrition guides, healthy meal plans, and simple recipes.

• Easy-to-follow supplement guides.

• Take your workout anywhere with the Jim Stoppani app.

• Try it all out for only $1.

Start Now For $1