Crunches are a classic core exercise that focuses on strengthening the rectus abdominis, the muscle responsible for a toned and defined midsection. This simple movement is ideal for beginners and can be easily modified for added intensity.
To perform a crunch, lie on your back with your knees bent and your feet flat on the floor. Place your hands behind your head or cross them over your chest. Lift your shoulders off the ground, contracting your abs, then slowly lower back down. Avoid pulling on your neck to prevent strain.
Crunches are highly effective for improving core strength, supporting better posture, and enhancing athletic performance. For variety, try bicycle crunches or weighted crunches.