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.

Types of Sit-Ups & Crunches

Published Jul,08 2011 | By Andrea Dixon

Abdominal exercises, such as sit-ups and crunches, are typically used to strengthen the core muscles. This type of exercise and core strengthening helps individuals obtain and maintain correct posture while also strengthening back muscles.