Well, I generally don’t eat a lot of junk food, and I don’t eat red meat at all. And right now I’m doing karate. It’s getting me in shape quick.

–Brian Jones

Well, I walk everywhere I go because I don’t have a car, so I think I get enough exercise.

–Mei-ling Yu

I eat almost everything I want. I don’t do anything to stay in shape. I’m just lucky, I guess.

–Lisa da Silva

 Um . . . to be honest, I’m not doing anything right now. I’m studying for exams this month, so I’m eating a lot of snacks, and I’m not getting any exercise at all.

–Michael Evans

Yeah, we exercise six days a week. We go swimming every other day, and in between we go to the gym. And once in a while, we go hiking.

–The Parks

According to the information above, how does Mei-ling Yu stay in shape?