Tummy crunch, also known as abdominal crunch, is a popular exercise to strengthen the core muscles and tone the abdomen area. However, there are many other exercises that target the same muscle groups and offer similar benefits. Some popular synonyms for tummy crunch include sit-ups, plank, bicycle crunch, leg lifts, Russian twist, and reverse crunch. These exercises engage the abdominal muscles in different ways, encouraging a more varied and comprehensive workout routine. By switching between these exercises, you can increase muscle endurance, improve your posture, and develop a stronger and leaner midsection.