In this video I react to Jeff Nippard’s breakdown of body fat percentage—and then I put my surgeon hat on and clean up the mess social media has made of this topic. We talk about what “obesity” and “being lean” actually mean in real life, why the health risks of body fat aren’t just about a single number, and why the timeline for sustainable fat loss is almost always slower than people want. I also get into the very unsexy truth: your “goal physique” is a mix of desire, effort, genetics, and lifestyle—and most people underestimate the trade-offs. I break down the practical side of measuring body fat: DEXA vs BIA and why “best” on paper isn’t always best for real humans. We also talk about sex differences—men and women store fat differently, and that changes both aesthetics and health risk profiles. And before anyone tries to speedrun 9–10% body fat, I explain what body fat is actually for (yes, it has jobs), why ultra-lean expectations are unrealistic for most people, and how to find your body’s sweet spot where performance, hormones, recovery, and long-term health all make sense.