The Straddle Back Lever is an advanced calisthenics exercise that requires significant upper body and core strength. To perform this exercise, start by hanging from a bar with a pronated grip. Engage your core and slowly lower your body forward while keeping your arms straight. Spread your legs into a straddle position to help balance and control the movement. Your body should be parallel to the ground, with your chest facing down. Hold this position, maintaining tension throughout your body, especially in your core and shoulders. This exercise targets the back, shoulders, and core muscles, and requires practice to master the balance and strength needed.