How are some people do skinny?

I see people whose palms can wrap around their upper arms in public. Whose legs are the size of my wrist. very thin, half of me is the size of their whole bodies. They can eat a sandwich for lunch and be full. So what would they call me? They can do a handstand and walk around and not get tired. They can wear size... show more I see people whose palms can wrap around their upper arms in public. Whose legs are the size of my wrist. very thin, half of me is the size of their whole bodies. They can eat a sandwich for lunch and be full. So what would they call me? They can do a handstand and walk around and not get tired. They can wear size 6 and to them, that's normal or they consider that big. But I'm 190 pounds and consider it normal and I'm only 5" 5.
Update: I meant so skinny
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