40 Down, 15 To Go

For the last six months 40-year-old Nancy Lopez has been on a fitness crusade. With the help of trainer Leah Vann, Lopez has shed 40 pounds and is down to 150. That's a lot to lose for somebody who's only 5'5", but Lopez wants to lose 15 more pounds. She has also toned up, thanks to two-hour workouts she does six days a week. Here is a look at her regimen.

Diet: Lopez consumes only 1,200 calories a day, including a maximum of 25 grams of fat. She eats fruits, vegetables, bagels, pasta, chicken and low-fat chili. She avoids mayonnaise, cheese and butter. Lopez also drinks lots of water and skim milk.

Exercise: The first hour of her routine is devoted to cardiovascular work on a stationary bike, a treadmill and a Stairmaster. ( Lopez goes 30 minutes each on two of the three devices.) Then she does 45 minutes of weightlifting, concentrating on her upper and lower body on alternating days. That's followed by 200 sit-ups, and she ends each session with 10 minutes of stretching.