Jim Stoppani, PhD, is one of the world's most recognized and popular authorities on training, nutrition and dietary supplements. He was the Senior Science Editor for Muscle & Fitness, Flex, and Muscle & Fitness HERS magazines for over 10 years and has trained some of the top celebrities in the world, including Dr. Dre, LL Cool J and Mario Lopez. Stoppani runs his own membership-based website JimStoppani.com, which features all of his exclusive training and diet programs, videos and articles, and he's the owner and creator of the ground-breaking JYM Supplement Science line of sports nutrition products. As a published author, his book credits include the New York Times Bestseller LL Cool J's Platinum 360 Diet and Lifestyle and the acclaimed educational text Encyclopedia of Muscle & Strength.
Jim Stoppani, PhD
True or False — Creatine is more dangerous than a placebo?
1 week ago | [YT] | 12
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Jim Stoppani, PhD
Creatine, Finished.
Not Reinvented.
Creatine + Blood Flow Boosting Nitrates. A full 5g creatine dose combined with 500mg dietary nitrates for strength, power, endurance, and muscle pumps in one stimulant-free formula.*
🔥 If you’re serious about maxing out your workouts, this is your go-to.
jymsupplementscience.com/products/creatine-plus
1 week ago (edited) | [YT] | 17
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Jim Stoppani, PhD
A major new analysis on CREATINE just dropped. 📊
This changes the conversation.
Watch this before you decide. 👀
1 week ago | [YT] | 11
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Jim Stoppani, PhD
Do you slow down your negative reps to build more muscle?
3 weeks ago | [YT] | 31
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Jim Stoppani, PhD
💥 Ready to hit full-body arms like never before? 💪
We’re breaking down Triceps & Biceps Supersets from the Superman Remastered Program — every rep, every set, step by step.
3 weeks ago | [YT] | 5
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Jim Stoppani, PhD
⏱️ What if you could get the same muscle and strength gains in almost half the time?
New research just confirmed it—and it involves supersets.
I break down a 2025 meta-analysis of 19 studies showing how supersets stack up against straight sets.
Do you train with supersets—or avoid them? 👇
1 month ago | [YT] | 13
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Jim Stoppani, PhD
Do elbow sleeves actually help you lift more?
A 2025 study says yes.
More weight. More reps. Less elbow stress.
Watch the full video and see what the science says.
1 month ago | [YT] | 7
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Jim Stoppani, PhD
Most people take L-Carnitine for fat loss—but don’t know why it works.
2 months ago | [YT] | 3
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Jim Stoppani, PhD
I get a lot of questions about CLA. 🧐
In this video, I break down how CLA really works, who should take it, and why results take time. If you want to get leaner, stronger, and smarter with your body composition, this is for you.
2 months ago | [YT] | 4
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Jim Stoppani, PhD
🚨 “Lead in your protein powder?!” — yeah, that headline got people freaked out.
Consumer Reports pushed fear, not facts. I break down exactly where the lead really comes from (hint: the soil your food grows in) and why your protein powder is just as safe as the fruits and veggies in your fridge. 🧠💪
Don’t let clickbait scare you out of good nutrition — watch my full breakdown here 👇
Tag your buddy who almost threw out their protein tub 😂
3 months ago | [YT] | 15
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