How to Do Crunches: Proper Exercise Form & Variations

Crunches are an extremely effective compound-muscle ab exercise. When done correctly, they target your upper abdominal, lower abdominal, oblique, and lower back muscles, and have less risk of injury than traditional sit ups. This article

The Major Differences Between Sit-Ups and Crunches

Sit-Up vs. Crunch Sit-Up and Crunch Circuit

5 Crazy-Effective Crunch Variations

How to Do Crunches: Proper Exercise Form & Variations

How To Do Crunches, The Right Way

How to Do Crunches Correctly — Plus 14 Variations

Work Your Abs without Equipment: All About the Crunch

Crossover Crunches: Tips, Technique, Correct Form, Variations and Benefits

Weighted Crunches Exercises Guide: How-To, Benefits, Muscles Worked, and Variations – Fitness Volt

How To Properly Perform the Crunches Exercise