Definition
A sit-up is a classic abdominal exercise that strengthens your core muscles. It involves lying on your back and lifting your entire torso towards your knees. Think of it as a full-range crunch 🏋️. Sit-ups engage both the upper and lower abdominal muscles, as well as hip flexors. Unlike crunches, sit-ups provide a more complete core workout. Proper form is crucial to avoid back strain. They contribute to better posture and core stability.