Disregarding the "10k steps is extreme" nonsense, is that wrong? According to an internet calculator, I'd need about 1500kcal to run 20km. A hamburger, french fries and cola already have about 1200kcal. So if I run regularly but keep my fast food diet, I don't think I'd lose weight.

April 11, 2026 - 13:50 UTC

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You burn a lot just doing nothing, about 1500-2000/day depending on your metabolism. So if you’re not getting fatter at the current rate then you probably would lose weight if you didn’t start eating more (but it’s all complicated).
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It's wrong to say that exercise plays no role in weight loss, only diet, and that sounds to me like what she's saying.
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