Height/weight: 5 feet, 11 inches; 150 pounds

Occupation: professional golfer

What exercises do you do?

I do Pilates two days a week for an hour. Anyone who has lower back problems, I highly recommend Pilates … With Pilates, you're stretching and strengthening at the same time. It's really good for your abdominal area, so it takes pressure off your lower back.

Three days a week, I'll do a three-mile walk around my neighborhood in 40 minutes. I walk usually with a friend or friends, and sometimes by myself.

I do stretches every night. I feel better if I stretch everything out before going to bed rather than in the morning when my muscles are already tight…

I play golf, but in Florida you're in a cart so it's not like you're getting a lot of exercise. I feel lazy.

What's your typical diet?

I try to eat a balanced diet of proteins, carbohydrates, lean meat with vegetables and brown rice or whole-wheat pasta. I stay away from fatty foods and eat organic when I can. I try not to eat the same thing more than twice a week.

I eat three meals a day. Sometimes I have a snack in the afternoon — usually nuts or mixed nuts: almonds, cashews, pistachios, walnuts. When I go out to restaurants, I'll eat fish.

I haven't had soda in years. I drink water and hot tea. Usually in the mornings, I have hot tea, and at night green tea. I also like iced tea. I brew decaf iced tea at home. I don't drink juice because it has too much sugar.

Mireya Mayor

City of residence: Kendall

Height/weight: 5 feet, 8 inches; 116 pounds (before pregnancy)

Occupation: National Geographic scientist, TV host and author

Why do you keep fit?

I've always been athletic. Danced ballet for 12 years, was a cheerleader in junior high, and played basketball and ran track in high school — I didn't make the cheerleading squad in high school. And then I was a Dolphins cheerleader for four years. Now when I'm on expeditions, I need to hike up mountains and through impenetrable bushes, and be quick on my feet to run from elephants.

Do you work out when you're on expeditions?

If I'm in Madagascar's capital, I'll run. When I'm in the field, exercise takes the form of hiking with gear on my back.

Sometimes we have to capture animals for genetic tests. Once we dart the lemurs, for example, they bolt and the chase begins! After getting close, four of us will pull a net open, but if the lemur doesn't fall, we'll have to climb the tree. Lemurs cling to trees even if darted with tranquilizers.