Tamilee Webb's workout can help you defy the laws of gravity. True, this top fitness pro can't teach you to fly, or even float through the air, but she's certainly discovered the formula for giving your body a lift. "The secret to keeping your body looking firm and sculpted is change," says the star of the new Defy Gravity exercise video series and author of a book by the same name. "You don't have to make drastic changes to your workout every day, but little changes definitely add up."

It doesn't take much to put this former Buns of Steel girl's theories into practice. All you need is a step, two sets of risers, a watch or clock with a second hand, and some dumbbells. Webb's done the rest by offering up these six gravity-defying toning moves, each designed to deliver maximal pickup, tone and tightness. She's also created a mix-n-match workout schedule that offers up differences in sets, reps and rest to keep your muscles guessing and the improvements coming.

For maximum results in just six weeks, she recommends working out with weights three times a week on non-consecutive days and also getting plenty of calorie burning cardio. (For even more toning and strengthening ideas, click to TamileeWebb.com.)

Try the moves:

Side Reach Lunge

Muscles worked: Butt, thighs, arms, core.

The setup: Hold a dumbbell in each hand and stand tall with your arms in front of you, palms in, and feet hip-width apart.