Curl-up

A curl-up is a fitness exercise primarily aimed at strengthening the abdominal muscles. It involves lying on your back with your knees bent and feet flat on the floor. Here's how you typically perform a curl-up: 1. **Starting Position**: Lie on your back on a flat surface with your knees bent and feet flat on the ground, hip-width apart. Your arms can either be crossed over your chest or placed behind your head for support.