Dr. Jim Stoppani is a founder, research scientist, author, and one of the most recognized voices in training, nutrition, and sports supplementation.
This channel breaks down the science behind:
• Training, workouts & programs
• Supplements & nutrition
• Muscle building, fat loss & performance
• Challenges & transformations
Jim spent more than 10 years as Senior Science Editor for Muscle & Fitness, FLEX, and Muscle & Fitness HERS, and has trained clients including Dr. Dre, LL Cool J, and Mario Lopez.
He created JYM Supplement Science and founded JimStoppani.com, home to his exclusive training and nutrition programs, videos, and articles.
His books include the New York Times bestseller LL Cool J’s Platinum 360 Diet and Lifestyle and Encyclopedia of Muscle & Strength.
Jim Stoppani, PhD
What equipment is ALWAYS taken at your gym?
The bench? The cables? Every dumbbell you need?
Drop your answer in the comments. 👇
3 days ago | [YT] | 7
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Jim Stoppani, PhD
The Smith machine: underrated or overrated? 👀
3 days ago | [YT] | 17
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Jim Stoppani, PhD
Using the Smith machine for back day? Read this. 👀
The guided bar changes how you row—and where you feel it. Your grip and elbow position matter, and the one-arm version offers a different way to target your lats.
In my latest video, I show you how to use Smith machine rows based on your goal: muscle growth, strength, or power.
4 days ago | [YT] | 5
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Jim Stoppani, PhD
When you’re still sore, do you train or rest? 💪
1 week ago | [YT] | 3
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Jim Stoppani, PhD
💪 STILL SORE? Should you train that muscle or give it another day off?
The answer depends on more than soreness. Your strength, training goal, and how sore you feel all matter.
In this video, Dr. Jim Stoppani explains what to consider before you train—and when to take a break.
1 week ago | [YT] | 1
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Jim Stoppani, PhD
Over 60? Should you train full body? 💪
Your training experience matters more than your age when choosing a workout plan.
In this video, Dr. Jim Stoppani explains why full-body training can be a great option after 60—and how repeating exercises helps beginners learn the movements.
1 week ago | [YT] | 0
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Jim Stoppani, PhD
Bro Split vs Full-body...Who You Got And Why?
1 week ago | [YT] | 5
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Jim Stoppani, PhD
Bro split or full-body training—which should you choose? 💪
Both can build muscle and strength when your weekly training volume is similar. But if fat loss is your goal, the research I cover in this video gives full-body training an edge.
I also break down whether you can train the same muscle five days a week and why a bro split might still be the right choice for you.
1 week ago | [YT] | 0
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Jim Stoppani, PhD
Does creatine damage your kidneys? Cause hair loss? Make you bloated or dehydrated? 🤔
You’ve probably heard these claims—but does the science actually support them?
In my new video, I break down 5 of the biggest creatine myths and explain what the latest research really shows about:
✅ Kidney health
✅ Hair loss
✅ Bloating
✅ Dehydration
✅ Muscle cramps
Creatine is one of the most researched supplements in fitness. It’s also one of the most misunderstood.
2 weeks ago | [YT] | 2
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Jim Stoppani, PhD
Every year it's the same trade: you enjoy the holidays, then spend January trying to undo them.
This year, join us in flipping the script.
My Holiday Shred Challenge is 5 weeks of training built to get you lean before the food, the parties, and the excuses start.
Here's what you get when you register:
✅ A complete full-body 5-week training program in my app
✅ The Holiday Shred Nutrition Guide (no guessing what to eat)
✅ Exclusive savings on JYM products to support you
✅ 125,000+ member JYM Army helping you the whole way through
✅ Eligibility for $25,000 in cash prizes 💰
Last year's winners weren't fitness pros. They were people who followed the plan for 5 weeks and let the results speak for themselves.
Register today for just $1!
► www.jimstoppani.com/f/2026-holiday-shred-challenge
2 weeks ago | [YT] | 3
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