From start to finish, this energizing program will quickly and efficiently whittle your middle. You'll get your best abs ever by combining cardio and strength training into one effective workout. Start with a circuit-based cardio routine to burn calories and flatter your midsection. Finish with a 5-minute ab blast to firm, tone and shape your best abs ever.

Cardio Workout: This circuit-style, mixed-impact workout takes the full-body approach to training. Each circuit combines five minutes of innovative, easy-to-follow aerobics with two minutes of targeted exercise. You'll sculpt and tone all of your muscles with dumb bell exercises from the pages of SHAPE.

Ab Workout: Shape Your Abs proves 4 innovative workouts, each using SHAPE's best ab exercises to sculp and tone your torso. The 5-minute routines all have a unique training style - from classic crunches to Pilates-inspired movements. Rotate all 4 and work your abs differently each day - guaranteeing optimal results.

BONUS: 12-minute total-body blitz

Don't have time to do the complete workout? This will hit your entire body in 12 minutes flat.