Crunch
Crunch is a classic core exercise that explicitly trains your abdominal muscles - part of your core. It also includes your oblique muscles on the sides of your trunk and the muscles in your pelvis, lower back, and hips.
Crossed-Arms Crunch, also called cross-body crunches, are a bodyweight ab exercise that helps build core muscles and tone your oblique muscles. This exercise helps to strengthen the sculpt the waist, core, and tone the abdominal wall.
Crunch is a classic core exercise that explicitly trains your abdominal muscles - part of your core. It also includes your oblique muscles on the sides of your trunk and the muscles in your pelvis, lower back, and hips.
Bicycle Crunch is the variations in bicycle crunches. This exercise works on both abs and obliques and also helps in toning the thighs and side abdominal muscles. Bicycle Crunch also improves core strength, stability, balance, and coordination.