Can't really say it's our diet that's the secret to youthful looks, as we both live on ramen, chimichangas, and other processed food.
My brother and I often get mistaken for people in high school.
I think my brother more so than me, nowadays, but I still got a few teachers asking me if I was in their high school class, when I was using the computer lab at my campus.
My brother's friends claimed he could pass as a 17 year old, despite him being 26.
It must be the genes from my mother's side of the family. My father's side is pretty youthful, too, I suppose, but I think it's mainly my mother's. All of her siblings, including herself, look 10-15 years younger than they actually are.
With high blood pressure in our family, you wouldn't really think we'd look so healthy.