Shrink for Her, Build for Him: What 6,700 Fitness Videos Promise

Type "workout" into YouTube and you get a promise before you get a single squat. Lose belly fat in 7 days. Booty burn. Get toned arms. Or, depending on who's on screen: Build bigger biceps. 8 muscle-gaining mistakes. The science of growth.

We wanted to know how strong that split really is, so we counted. Our dataset holds the titles of 6,747 workout videos that each passed 200,000 views, uploaded between 2016 and 2023 by 39 of the biggest fitness channels on YouTube. Sixteen of those channels feature women as the trainers on camera (Chloe Ting, Pamela Reif, MadFit, emi wong, Heather Robertson and others). Twenty-three feature men (ATHLEAN-X, Jeff Nippard, THENX, Buff Dudes and others).

One disclosure up front: the domain this site runs on once appeared in the descriptions of BikiniModelFitness videos, one of the channels in this dataset. That's how we started looking.

Two different promises#

We sorted every title into seven kinds of promise, using simple word lists you can check in the methods section. Then we compared channels with women on camera to channels with men.

The pattern is hard to miss:

• Smaller. Fat loss, slimming and "flat belly" turned up in 18.5% of titles from women-led channels and 9.1% from men-led ones.
• Smoother. "Tone", "sculpt" and "lean" appeared about ten times as often (8.8% vs. 0.9%). The word toned alone: 77 women-led titles, three men-led ones.
• Specific parts. Booty, glutes, hips and thighs: 18.6% vs. 1.7%. Booty appeared in 278 women-led titles and four men-led ones.
• Gentle. "Easy", "beginner", "at home", "no jumping", "low impact": 31.2% vs. 10.3%.
• Bigger. Strength, muscle, building and gaining showed up in 23.1% of men-led titles and 11.8% of women-led ones.

The words that most clearly separate the two groups tell the same story. On the women-led side: cardio, dance, burn, booty, butt, low-impact, toned, slim, waist, bikini. On the men-led side: muscle (290 titles vs. 6), build, biceps, chest, growth (107 vs. 1), mistakes and science (99 vs. 1).

That last one stings a little. Men's fitness YouTube sells itself as evidence-based. In our sample, women's fitness YouTube almost never used the word.

Does the audience reward it?#

Titles are marketing, and creators test what works. So we checked whether the "shrink" promise actually pulled more views.

Comparing big channels with small ones would be misleading, so we compared each channel with itself: the median daily views of its weight-loss titles against the median of its other videos. In 11 of 12 women-led channels with enough videos to compare, weight-loss titles came out ahead, by a median of 34%.

Strength titles went the other way. They drew fewer daily views than the channel's other videos in most women-led channels (median −23%). Before reading that as a verdict on women, note that strength titles also underperformed inside 13 of 15 men-led channels. "Strength" seems to be a weak hook for everyone. "Lose fat" is a strong one, especially when a woman is on camera.

Fitness researchers have described this landscape for years. A 2018 content analysis of #fitspiration images on Instagram found that most showed one body type, thin and toned, despite the hashtag's "strong is the new skinny" branding.¹ Our numbers show the same economy at work on YouTube, in the words creators choose to get clicked.

The good news: the shrink pitch is fading#

Split by upload year, the data holds a genuine shift.

In 2018, four in ten hit videos from women-led channels promised weight loss. By 2022 and 2023 it was about one in ten.

Part of that is new faces. Channels that broke through around 2020, such as MadFit, Heather Robertson and Sydney Cummings Houdyshell, barely use the pitch at all (2–4% of their titles). The bigger part is the established stars changing their own language. At Chloe Ting, weight-loss titles fell from 48% (2016–2018) to 24% (2021–2023). At emi wong, from 68% to 45%. At Vicky Justiz, from 35% to 14%. At Pamela Reif, from 20% to 7%.

What didn't happen: strength didn't grow. Strength promises stayed between 9% and 19% of women-led titles across the whole period. Since 2022 they outnumber weight-loss promises again, simply because weight loss fell below them. The industry dropped "lose weight" and reached for "easy", "no equipment" and "low impact" instead.

What this means if you train#

A video's title says nothing about whether the workout is good. Plenty of "booty burn" videos are solid strength training in disguise. Still, the words around us shape what we think training is for. If every video aimed at you measures success in inches lost, it takes effort to notice that you can also measure it in kilos lifted.

So here's a small experiment: next time you search, try "strength training for women" or "progressive overload at home" in place of "toned arms". You'll find a different internet.

How we did this#

Sample. The videos come from our own database of YouTube channels, collected via the official YouTube Data API in November 2026. We kept channels with at least 20 videos in our data where at least 40% of titles are about fitness, and within them every video uploaded 2016–2023 with at least 200,000 views. So we looked at each channel's hits only. View counts are as of November 15, 2026.

Women-led vs. men-led. We coded each channel by who trains on camera. Mixed-presenter channels (FitnessBlender, HASfit, Body Project and others), brand channels and channels we could not code with confidence were left out. The full coding is public. Presenter gender is a proxy for who a channel is speaking to and an imperfect one: The Fitness Marshall, for example, is coded as men-led although most of his audience appears to be women.

Promise categories. We matched each title against simple word patterns. "Lose fat / slim down" includes lose weight, weight loss, fat, fat burn, slim, skinny, calorie, shred, flat belly, small waist, inches, get rid of, flab. "Strength, muscle, build" includes strength, strong, muscle, build, gain, power, mass, bulk, heavy, hypertrophy, grow, bigger. A title can fall into several categories. Word lists are blunt: "fat burning dance party" counts as a weight-loss promise, and so does "why you can't lose belly fat", which is arguably the opposite.

Views. Daily views are lifetime views divided by days since upload. For the "does it pay off" question we compared videos within the same channel and report the median ratio across channels that had at least five videos with and five without the promise.

Limits. This is a sample of very successful videos from very large channels, mostly in English. It shows what got made and what got watched. It can't tell us why: thumbnails, YouTube's recommendations and the workouts themselves all play a part.

The analysis code and channel coding are open, and the full dataset is below. If you find an error, tell us and we'll correct it and note the change here.

Sources

1. Tiggemann, M. & Zaccardo, M. (2018). "Strong is the new skinny": A content analysis of #fitspiration images on Instagram. Journal of Health Psychology, 23(8), 1003–1011. doi:10.1177/1359105316639436 ↩