The Sexy-Body Revenge Workout

When Los Angeles personal trainer Jill Brown had her heart broken by a longtime boyfriend, she decided to get ripped and reap her revenge by sculpting the hottest breakup body her guy had ever seen. The empowering workout became so popular in boot camp sessions across Santa Monica, Calif, that she's starting up the Sexy-Body Revenge Workout at the celeb-overloaded Sports Club/LA next month ... and there's already a waiting list!

"Hey, a lot of people break up in Los Angeles and around the country, but you don't have to sit home and drown your sorrows in a quart of Haagen-Dazs this time around!" said Brown. She guaranteed you'll go "from flabby to ferocious in six weeks or less," and her secret body-sculpting weapon is a fusion of cardio bursts (jumping jacks, running in place) and compound strength exercises that involve nearly all muscles at once, giving you amazing, noticeable results – and fast! Eat your heart out, buster.

Here are three moves to get started:

Hunt and Prowl Lunges (sculpts butt, thighs, abs and shoulders)
Begin standing straight with straight arms extended at shoulder height, and hold a 12- to 20-pound dumbbell in both hands. Step forward with the right foot and bend both knees to 90 degrees. Simultaneously, rotate torso to the right keeping arms in front of you and hold down for three seconds. Rise back up, return to center and alternate to the other side with left left. Repeat for one minute, cursing his name every step of the way

Thighs Don't Lie Series (tones the hips, butt, legs and waistline)
Stand up straight with one hand touching a wall, chair or sturdy object to balance. Kick out to the side (up to hip height) 12 times, followed by 12 fast kicks to the front, then 12 kicks to the rear. As you switch legs, picture the bozo's face and start kicking with the other foot.

Walk the Plank Pick-Up (firms the chest, back, belly, arms and hips)
Come into full push-up position on hands and toes and hold for 30 seconds or so. Slowly come down to elbows but keep your whole body lifted as straight as a plank through the middle and hold for another 30 seconds if you can. Imagine you're balancing a tray of champagne flutes on your back to celebrate with your new boyfriend, and you don't want to spill them!

For other hardcore, athletic workouts, log onto That's Fit!

Fitness expert Nicole Dorsey Straff is a Los Angeles-based exercise physiologist and author, and she frequently writes about diet, health and wellness.