Crunch Fitness: Avon Grand Opening & Warm Up Workouts - 3/24/25 Sponsored Content by Fitness Ventures Sponsored content disclaimer: The information and advice displayed in this story are those of ...

When the goal is a flatter stomach, many people’s first instinct is to drop to the floor and crank out hundreds of crunches.

What are the benefits of doing crunches? No matter which variations you follow, crunches have the advantage over sit-ups of being able to better target abdominal muscles.

What are the benefits of doing crunches? No matter which variations you follow, crunches have the advantage over sit-ups of being able to better target abdominal muscles.

Ready to go beyond crunches, Russian twists, and planks? Try this 20-minute core workout programmed by a trainer for an advanced six-move core workout.© Ivan Pantic - Getty Images ...

Explore the differences between decline crunches and sit-ups. Find out what muscles each targets, and learn proper form to enhance your core training.