It's well established that a strong core can help with posture and back issues, and properly executed sit ups can contribute to a stronger, more stable core. "Regularly doing sit-ups or crunches can ...

Ditch the crunches and sit-ups and use the corkscrew abs exercise to build a strong core at home or the gym. It's low-impact and you don't need any equipment.

These calisthenics experts ranked 22 abs moves into tiers and the hollow-body crunch came out on top, while sit-ups were left languishing in the bottom tier.

A lot of these exercises would be ab-focused, so I might do mountain climbers, crunches, sit-ups, and bicycle crunches, and repeat that two-minute sequence for a total of four minutes.

Crunches and situps can be great core exercises to tone the abs when performed correctly. Learn how to do a crunch the right way.

Learn how to perform sit-ups with perfect form, expert guidance, and the best alternatives and workouts to maximize your core strength.

The abdominal exercise builds stronger core muscles and primarily dials into the six-pack abs — the rectus abdominis. What’s the difference between a crunch and a sit-up?

An ab roller is a cheap alternative to sit-ups and crunches. Using an ab roller can make your ab workouts more fun and effective.

Ditch the crunches and sit-ups and use the corkscrew abs exercise to build a strong core at home or the gym. It's low-impact and you don't need any equipment.