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Illustration of a skinny guy who bulked up with the Bony to Beastly program being skeptical of Jeremy Ethier's muscle-building advice.

Jeremy Ethier’s Bulking Advice: Bad Science, Fake Transformations & False Accusations

Jeremy Ethier just released a video about bulking with fake transformations, incorrect scientific references, and a strange accusation against me. I suspect Jeremy’s intentions are good. I think he’s trying to give people realistic expectations. However, I think it’s wrong to use fake transformations as an example of “realistic” results, especially when he’s incorrect about what’s realistic.

I’ll link the studies he references, and you’ll be able to see right away that they suggest the opposite of what he says they do. I’ll also go through his bulking recommendations, explaining why they’re wrong and don’t work very well for skinny guys.

The accusation is stranger. Jeremy put on a wig of my haircut and attacked a couple of the claims I’m known for making:

  • Claim 1: I gained 20 pounds quite leanly in 3 months. Jeremy says this is physically impossible without steroid abuse, and therefore I must be lying (or abusing steroids). This is false. I’ve done it myself, I wasn’t the first, and I’ve had quite a few skinny clients get similar results. They tend to be tall and underweight.
  • Claim 2: It’s realistic for the average skinny guy to gain 20 pounds quite leanly in 6 months or less. Again, Jeremy claims this is physically impossible. He says it takes at least a year for a skinny beginner to gain 10–20 pounds of lean mass naturally. This is false, and in a way that’s much easier to show, since it’s fairly common for skinny beginners to build muscle faster than that.

I made a video response, but I want to go a bit deeper in this article, including answering all of the common questions I got after posting the video. I answered 400 comments underneath the video, and I’m happy to answer more—that’s my favourite part of YouTube—but I think it would pay to go into greater detail here.

Note: bulking slowly is perfectly fine. The gains you leave on the table won’t rot. You can have them later. However, Jeremy Ethier’s video was “The Fastest Way to Gain 20 Pounds of Muscle Naturally,” so that’s what this article is about.

I remember what it felt like to be a skinny guy who wanted to bulk up fast. If that’s what you want, too, then I want to help you do it properly.

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The best bulking books, courses, and programs for skinny guys trying to build muscle.

The Best Bulking Programs & Apps for Skinny Beginners in 2026 (Reviewed)

To find the five best bulking programs for skinny beginners, we surveyed our 28,000 naturally thin newsletter subscribers. Most of them have tried several different bulking programs, some of which worked, and many of which didn’t.

We’ve also bulked up ourselves. Marco is naturally skinny, he has a degree in health sciences, he has over a decade of experience as a full-time strength coach, and he’s helped a wide variety of clients bulk up, ranging from everyday skinny guys all the way up to college, professional, and Olympic athletes.

I’m naturally skinny, too, with over 15 years of full-time experience helping over 15,000 skinny people bulk up. We live and breathe this niche. So, we’ll offer our own wisdom here, too, when we can.

Note: Our Bony to Beastly bulking program was rated the highest, but that’s because we surveyed our own newsletter. It wouldn’t really make sense to review our own program, obviously. We’re much too biased.

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How Long Does it Take to Gain 20 Pounds of Muscle?

2026 Update: I’m not sure, but I think Jeremy Ethier may have called me out. In his latest video, currently at 1.7 million views, he claims that anyone saying it’s possible to gain 20 pounds of muscle in 3 months is being dishonest. If you google that claim, you’ll see my progress photos, some of my client’s progress photos, an AI summary that quotes me, and this article.

I see where the mistake comes from. It’s common mistake. What’s strange is that Jeremy Ethier disproves himself in his own video. I’ll go through it.

Gaining 20 pounds of muscle is a common goal for skinny beginners. If you’re starting off underweight, like I did, that will almost certainly be enough to bump you up to a healthy bodyweight. It’s enough muscle to look noticeably bigger and stronger, too. You’ll start picking up compliments from your friends and family members. It’s a big change.

Most skinny guys can gain 20 pounds within a few months. That’s long enough to build good habits and get some momentum going, but not so long that that it’s hard to keep up your motivation.

I’ve been helping skinny guys bulk up for 15 years. I’ll show you a ton of examples. You’ll see what it looks like on different guys, how lean their gains are, and how long it took them.

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Illustration by Shane Duquette of a man measuring how much muscle and fat he's gaining.

How to Know if You’re Gaining Muscle or Fat

Let’s imagine you’re bulking, trying to build muscle leanly. You’re getting heavier, filling out your clothes, and your muscle measurements are increasing. That sounds good, but your waist is getting bigger, and your stomach seems a little softer. How do you know if you’re gaining muscle or fat?

Or let’s say you’re recomping, trying to build muscle and burn fat at the same time. How can you know that it’s working? What signs of muscle growth and fat loss should you look for?

Same with cutting. You need to know if you’re losing muscle or fat.

The temptation is usually to use a BIA bathroom scale and let it estimate your body fat percentage. That doesn’t work. It isn’t even close to accurate enough to be useful. You could get an InBody scan at the gym or a DEXA scan. Those are more accurate. But they still aren’t nearly accurate enough.

There are far better signs of muscle and fat gain (or loss). This can be cheap and easy, too. You can do it at home right now.

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Illustration by Shane Duquette of the fearsome rage of the Gymcel.

The Myth of the Gymcel

I’ve written articles on how to build a more aesthetic physique and which body type women prefer. I’ve made videos about it, too. Some of the articles have had millions of readers, and some of the videos have gotten hundreds of thousands of views. Most of them are based on my surveys of thousands of women, but I’ve also spoken with some of the top researchers.

Recently, those videos have pulled in some of the blackpill/looksmaxxing crowd, who have very different ideas about what women prefer. And that’s great. One of their ideas is that getting bigger and stronger doesn’t actually help that much, arguing that a man’s face and height matter far more than his body. FaceIQ is known for this, but it’s a common idea.

Most research shows that women care far more about how physically capable a man is than about how tall he is. Height is helpful, but mostly because taller guys are often bigger, stronger, and healthier. If a shorter guy can get stronger than the taller guy, women will usually prefer his physique. I have a full article about that here.

Enter the gymcel. Whenever I mention how powerful being powerful is, the blackpillers bring up the gymcel meme, arguing that being muscular only helps if you’re already attractive in other ways. There’s a hint of truth there, actually. But it’s not quite what most men think.

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Illustration of a natural lifter with an attractive physique compared to an extremely muscular man.

Do Women Like Men Who Take Steroids?

A recent study found that 56% of young steroid users are doing it to improve their appearance and look more attractive (study, study, study). If you’ve been lifting weights for a while, that might sound strange. It’s well-known in the lifting community that steroids won’t make you more attractive. I’ll go through all the evidence in a moment, including some of my own data.

When I first started lifting, this idea of using steroids for aesthetic reasons came from Zyzz, who died at 22 years old. The torch was picked up by Jo Linder, who died at 30. Nowadays, the idea is coming from the blackpill and looksmaxxing communities, propped up by guys like Clavicular and Road to 1%.

My 17-year-old niece told me that two of her male friends had recently started taking steroids to improve their dating lives. It didn’t work, which they found confusing. Women like muscles, so why aren’t the bigger muscles helping?

It’s tricky. Women do love muscular men. Getting stronger is perhaps the single best thing you can do to improve your appearance (study). Strength is dramatically more attractive than being tall or lean. And steroids make you look stronger, so how could it be that they make you less attractive?

There are a few different reasons, some sneakier than others.

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Men with different body shapes, levels of muscularity, and degrees of leanness. Illustrated by Shane Duquette.

How to Build the Most Aesthetic Male Physique

Most men want to have an aesthetic physique. Few know exactly what that means. For example, when they guess the degree of muscularity women prefer, they’re off by thirty pounds (study). Many have a deeper misunderstanding, failing to connect their appearance to their fitness and strength. Some shun aesthetics, mistakenly thinking it’s superficial. Others are superficial on purpose, thinking it’s the best way to become attractive. That’s never as convincing as the real thing.

We’ll cover the attractiveness research. We’ve spoken to some of the study authors. We also went deeper, testing our hypotheses by conducting our own surveys. We collected thousands of responses for each: survey 1 and survey 2.

But be warned: this article is long. If you don’t want to read the whole thing, here’s a simple trick to improve your appearance: have a drink. It will boost your aesthetics (to yourself) by 50%. This is called “The Reverse Beer Goggles Effect,” also known as Beauty is in the Eye of the Beer Holder (study). It’s not a perfect solution, but it will save you twenty minutes of reading.

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Illustration showing varying degrees of muscularity that women rated for attractiveness.

The Ideal Male Body Type According to Women (Survey Results)

I surveyed 423 women, asking them to rate different body proportions and levels of muscularity and leanness in men. To do that, I traced my body and then adjusted the proportions, leanness, and muscle sizes. I tried to answer questions like:

  • What’s the most attractive amount of muscle for a man to build?
  • Do women prefer more muscular upper bodies or lower bodies?
  • What proportions do women find most attractive?
  • What’s the most attractive body fat percentage?
  • Which muscles do women find most attractive?
  • Does neck size affect our appearance?
  • What’s the most attractive overall body type?
  • How important is height?

Here are the survey results.

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Survey illustration by Shane Duquette comparing a strong man against a tall man to see what women find more attractive.

What’s More Attractive: Height or Muscle?

We often think of height as being attractive in and of itself. It’s common to think that height is attractive because it’s masculine, or because it makes guys stand out in a crowd, or because it signals good genetics. That isn’t the best way to think about it.

Women’s preference for tall men was formed back in the primordial crucible, back when strength was the difference between life and death. Stronger men were able to muscle their way into positions of leadership, claim more resources, and offer better protection to their loved ones. That’s the main reason height is attractive—because it gives a hint at a man’s physical capability.

If that’s true, it raises an interesting question: is it more important to be strong or tall?

Also, is it even true? The blackpill looksmaxxers have a different theory.

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Illustration by Shane Duquette of a short guy struggling to attract women.

Why Do Women Like Tall Men?

When something is as universally attractive as height, there’s usually a biological root to it. Culture can try to weed it out, or fertilize it, but it seems that most women are born with a genetic predisposition to find height attractive, kind of.

Height isn’t directly attractive. Rather, it’s attractive because it indirectly signals other traits, such as strength. And if we use the example of strength, that means:

  1. If you’re tall but weak, you won’t get much of an attractiveness boost from being tall.
  2. If you’re short but strong, your physique can be even more attractive than a taller guy’s.

Kind of. There are a couple of exceptions.

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