The Advanced Tuck Front Lever is a challenging calisthenics exercise that targets the core and upper body. To perform this exercise, start by hanging from a pull-up bar with a shoulder-width grip. Engage your core and pull your knees towards your chest, tucking them tightly. Your back should be parallel to the ground, and your arms should remain straight throughout the movement. Hold this position, maintaining tension in your core and back muscles. Focus on keeping your body stable and avoid swinging. This exercise requires significant strength and control, making it suitable for advanced practitioners.