Hanging knee raises are an effective core exercise that targets the lower abdominal muscles and hip flexors. By hanging from a pull-up bar, you use your core strength to lift your knees towards your chest, improving overall core stability and strength.

1. Hang from a pull-up bar with your arms fully extended.
2. Engage your core and slowly lift your knees towards your chest.
3. Hold the position briefly.
4. Slowly lower your knees back to the starting position.