Abs Workout: Get Six-Pack Abs and Lose Belly Fat Fast

Achieving washboard abs and losing belly fat involves a combination of high-intensity cardio and core-specific challenges like the 4-week plank. Discover why crunches alone won't give you a flat stomach and how to safely target the lower abs.

Woman doing sit-ups in exercise class

The Muscles Targeted By Crunches

Contrary to popular belief, the classic crunch in not the most effective abdominal exercise. A study conducted by the American Council on Exercise shows the crunch falling short of the top ten exercises.

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