Why is it that skinny people can eat a lot and don't look like they are eating a lot?

Why is it that skinny people can eat a lot and don't look like they are eating a lot?

Examples?

If you're talking about teens, they're different animals. They're burning calories at a higher metabolic rate, but that won't last forever. Few adults can eat the way they ate his teens and get away with it.

You're talking about people like me, I'm not really skinny, although my sister thinks I am. I'm just thin compared to the average American. But I lift weights, so I'm slim at the waist and not at the shoulders.

And I admit that I eat a lot. But I also exercise daily, and when I do eat, it's likely to be food like this:

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What I don't eat is garbage like this, and this is the stuff that makes people fat, even in small quantities.

Thanks for Reading

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