Jeremy Ethier

Welcome to my podcast! I'm a science-based fitness researcher, YouTuber, and founder of Built With Science. On this podcast you'll find a mix of training and nutrition tips based on the latest advances in scientific research.

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22 episodes
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Wednesday · 24 min
Targeting Belly Fat Is... Possible?! (NEW Study)
Can you actually target belly fat? For 60 days, we put the most popular belly fat workout advice to the test — running a real experiment on how to lose belly fat using exercises to lose belly fat like targeted ab training, and measuring every result with MRI, one of the most precise ways to track changes in fat and muscle. If you've ever wondered whether belly fat loss exercise routines actually work, this is the clearest answer we could produce. Get 2 weeks free of your personalized training and nutrition plan here: https://bws.plus/spotify
Tuesday · 21 min
How Running Completely Changes The Human Body
I did 30 minutes of cardio a day (running every day for 30 days) while still lifting to settle the debate every lifter has: does cardio kill gains? It comes down to questions like cardio before or after weights, whether cardio and weight training can coexist, the problems with running vs lifting, and the two fears that keep people from running at all — is cardio bad for muscle gain, and does running make you lose muscle? To find out, I tested my VO2 max, got an MRI body scan, used a DXA scan, and trained for Hyrox. Get 2 weeks free of your personalized training and nutrition plan here: https://bws.plus/spotify
Monday · 10 min
It's Weird, But It Re-Builds Your Tendons In 30 Days
If your knee pain, elbow pain, or shoulder pain keep clicking, aching, or getting re-injured, the real problem may be your tendons. This tendon rehab guide covers the two biggest mistakes that weaken them and the isometric tendon exercises that strengthen weak tendons, potentially in as little as 30 days, plus tendon pain relief, tendon recovery, and injury prevention. Get 2 weeks free of your personalized training and nutrition plan here: https://bws.plus/spotify
Sunday · 23 min
I Proved My 6-Pack Abs Diet Works For ANYONE
What happens when you swap diets with someone three times your size — and what can it teach you about how to stop overeating? I put the best strategies to stop overeating to the test, building science-backed tips to stop overeating into a full day of real meals. Get 2 weeks free of your personalized training and nutrition plan here: https://bws.plus/spotify
October 17 · 16 min
I Proved (Almost) Everyone Is Wasting Time In The Gym
How many days a week should you work out to build muscle — and is a 6-day workout plan in the gym actually better than training 3 days a week? We put over 200 lifters through a 10-week experiment comparing a 3-day vs 6-day push/pull/legs split, plus a third group that packed the full 6-day volume into three full-body workouts. The results reveal some important lessons about how often you should work out, how many times a week you should work out each muscle group, and when more training stops paying off. Get 2 weeks free of your personalized training and nutrition plan here: https://bws.plus/spotify
October 15 · 13 min
It's Dumb, But It Builds Muscle Almost 4x Faster
If you've wondered how often to train muscle groups per week, you've heard it: train hard, then take rest days — 48 to 72 hours — for repair and growth. That's the logic behind best training frequency advice, and why choosing to train everyday risks overtraining. But some people do demanding physical work daily and still build unusually muscular bodies. Could removing rest days actually help a muscle grow faster? Could that be the best workout split and best workout routine to build muscle? Get 2 weeks free of your personalized training and nutrition plan here: https://bws.plus/spotify
October 14 · 19 min
It's Weird, But It Destroys Your Body Fat In 30 Days
What if you could lose fat while eating huge meals, never counting calories, and rarely feeling hungry? To test that, I built the world's most filling diet: a volume eating plan that swaps calorie dense foods for high volume low calorie meals and low calorie foods big enough to keep you full in a calorie deficit. Get 2 weeks free of your personalized training and nutrition plan here: https://bws.plus/spotify DOWNLOAD THE FREE 30 DAY GUIDE HERE:http://builtwithscience.com/fillingdiet
October 11 · 13 min
Why You Store Fat Here, And How To ACTUALLY Lose It
Why does stubborn fat disappear quickly from some areas but refuse to budge from others? In this video, I share how to lose belly fat and other frustrating problem zones, including how to get rid of belly fat around your sides, what to do about lower belly fat, and even how to lose side belly fat that hangs on longest. I rank five of the most stubborn fat-storage areas from easiest to hardest to lose, using real DXA scans, research, and transformations to show why each area behaves differently — and the training and diet strategies that can help. Get 2 weeks free of your personalized training and nutrition plan here: https://bws.plus/spotify
October 10 · 22 min
It's Weird, But Destroyed Every Ab Exercise I Tested
In this video I'm testing 30 popular upper ab exercises, lower ab exercises, and all kinds of ab workouts to find what is actually best. Start your free 2 week trial of BWS+ below: https://bws.plus/spotify⁠⁠ Link to ab mat:⁠⁠ https://link.amazon/B08jtBDGe⁠⁠
Sep 24, 2024 · 14 min
How to Get Lean in 60 Days (And STAY Lean Forever)
How to get lean: The process of getting lean and how to lose fat is actually very simple. It's not easy, but getting a lean body is 100% something anyone can do. If you follow my 3-part plan on how to get lean — from my fat loss diet and fat loss training training, as well as the crucial steps I took to prevent fat regain — I guarantee you’ll get lean fast and, more importantly, maintain your ‘shredded body’ for good. Click below to join our new training and nutrition programs: https://builtwithscience.com/
Sep 17, 2024 · 8 min
How to Build Muscle 2x Faster
What’s the best way to build muscle? Can “bad form” help you build muscle fast? We all know that guy who says he can do 30 pull-ups, and then they’re just half reps. But what if he’s onto a secret about muscle growth? Today, I’ll show you why new research suggests using “bad form” can help you gain muscle almost twice as fast. And it’s actually pretty simple: it’s all about the stretch. Here’s everything to know about the fastest way to build muscle. Click below to join our new training and nutrition programs: https://builtwithscience.com/
Aug 5, 2024 · 11 min
How I Lost My Belly Fat in 7 Days (Science Experiment)
How to lose belly fat in 1 week? Is losing stubborn belly fat 3 times faster even possible? For the next 7 days, I'll be following a science-backed fat loss plan designed to lose belly fat fast. I want to see how my body reacts and if this could be an easy way to achieve weight loss and shred down for the summer. Click below to join our new training and nutrition programs: https://builtwithscience.com/
Jul 29, 2024 · 11 min
The 3 Most Popular Supplements (You Should AVOID)
The supplements industry has exploded, reaching almost $400 billion dollars just last year. But how much of the bodybuilding supplements industry is a scam? Protein powder, creatine, multivitamins, athletics greens, BCAA's, fat burners, etc. What gym supplements actually work and what doesn't? Today I’m testing the most popular workout supplements, comparing their claims against real scientific data. I’ll show you what scams to avoid and which gym supplements research says you should use instead. Starting with one that may come as a surprise … creatine. Click below to join our new training and nutrition programs: https://builtwithscience.com/
May 22, 2024 · 13 min
What Happens After 30 Days of Taking Steroids?
This podcast is for educational purposes only. What would happen if I took steroids for 30 Days? I’m a lifetime natty, but nowadays it seems like so many athletes, actors, and even social media influencers are hopping on steroids. It got me thinking, how serious are steroids side effects? Could I actually use them safely? I wanted to speak to people with first-hand experience. First, I reached out to a bodybuilding veteran to show me the ropes on testosterone. Click below to join our new training and nutrition programs: https://builtwithscience.com/
Apr 30, 2024 · 9 min
How To Get WIDER Biceps
Is it possible to get wider arms? Isn’t this just genetics? Can you really build wider biceps through your bicep workout? Well, once you understand the anatomy of the short-head biceps and long-head biceps, you'll see it's possible. And after strapping some electrodes to my arm, I found the best exercises you need to include in your biceps workout. Without further ado, here’s how to get wider biceps. Click below to join our new training and nutrition programs: https://builtwithscience.com/
Apr 16, 2024 · 10 min
Targeting Belly Fat Is POSSIBLE?! (New Study)
Everyone wants to lose belly fat, right? The problem is, you can't choose where fat loss happens in your body every time you work out. Or at least, I didn’t think you could… Until I came across this new study, which suggests that targeting belly fat may be possible and much easier than we all thought. I’ll share exactly what researchers have found about belly fat loss and how you can apply it to your own training, so you burn that belly fat off. Click below to join our new training and nutrition programs: https://builtwithscience.com/
Apr 8, 2024 · 11 min
How To Build Muscle WITHOUT Bulking (NEW RESEARCH!)
Can we build muscle without bulking? No, right? If you want to build muscle, you gotta bulk, right? I mean that’s what all the biggest guys in the gym seem to be doing. But bulking can be the WRONG way to build muscle for most people. Today I’ll share why that is and how you can build muscle without bulking up. Get ready for some of the best bulking tips you’ve ever seen. Click below to join our new training and nutrition programs: https://builtwithscience.com/
Mar 25, 2024 · 9 min
The ONLY 4 Ways To Build Muscle Faster
Building muscle takes time. But what if you could press the “fast forward button” on muscle growth? Scientifically, there are only 4 strategies you can use to build muscle fast. Most people only take advantage of 1 or 2 of them. Or, they do them all incorrectly, which stops them in their quest to gain muscle fast. In today’s podcast, I’ll reveal what the 4 strategies are and how to use them to build muscle faster properly. Click below to join our new training and nutrition programs: https://builtwithscience.com/
Mar 18, 2024 · 14 min
The #1 Diet To Lose Fat (FOR GOOD!)
Why is it that only about 10% of us succeed at a fat loss diet? Well, most of what people learn about how to diet to lose fat is wrong, and just sets you up for failure. But after over 10 years of studying the science, working with top dietitians, and testing on thousands of clients, I want to share a game-changing weight loss diet that I guarantee will work for you. But pay attention, because every detail in this fat loss diet matters. Here’s the best diet for fat loss. Click below to join our new training and nutrition programs: https://builtwithscience.com/
Mar 11, 2024 · 10 min
The #1 Workout That Blew Up My Butt
Want stronger glutes? Today I’m sharing the #1 glute workout that grew my flat butt. Strong glutes can go a long way to preventing knee pain and lower back pain. But they also help complete a well-developed physique. To grow them, you only really need 3 best glute exercises. I’ll show you the full detailed glutes workout at the end, but you need to do the glute exercises properly so pay attention. Click below to join our new training and nutrition programs: https://builtwithscience.com/

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