Will you tell them, eat breakfast and you won't become obese anymore? Well, that might not work, especially if they're not physically active. I mean, what's going to happen if you have an obese person who's not physically active? And then you tell them to eat breakfast. Maybe that'll make things worse. And based on that, the advice or the implication from the article is the wrong thing. Physical activity maybe is the thing that should be focused on.