Some beauty trends, no matter how much time passes, continue to cling to us. One of them is the “thigh gap”—that coveted space between the thighs when standing.

But why does this particular anatomical detail still hold such fascination… even though it’s out of reach for the vast majority of us? Here’s a hint: it has nothing to do with exercise or willpower.

The Thigh Gap: A Myth That Defies Common Sense

Since the rise of social media, some beauty standards have taken on exaggerated importance. The thigh gap is, unfortunately, one of them.

Presented as the ultimate symbol of thinness, it still fuels thousands of posts on TikTok and Instagram. Between questionable challenges and “tips” for achieving it, the message is loud and clear: it’s supposedly possible—and even desirable—to have a visible space between your thighs. But is it really?

In truth, the shape of your legs—and whether you have that gap or not—depends mostly on factors completely beyond your control. We’re talking pure anatomy here: the width of your pelvis, the alignment of your femurs, the structure of your muscles… In other words, things that have absolutely nothing to do with how healthy you eat or how many squats you can do.

What Science (and Your Skeleton) Say

Even if you’re very thin, you might never develop a thigh gap. And that’s perfectly normal. As Dr. Ross Perry, a British medical expert, explains, this much-hyped thigh gap is simply the result of a particular bone structure. It’s not a fitness goal, nor is it a health indicator.