For the L Dips, support your body weight on the parallel bars in the same fashion you would to perform a normal dip. The first part of the exercise is the same as a normal dip. Lower your body down till your chest is even with the parallel bars. Next, kick your legs forward and rock your torso back till your arms are resting on the bars. Pull your legs back and rock your torso forward to return to the dip position and push up till you reach the starting point of the exercise. Repeat this motion for the allotted amount of reps and then rest.
This exercise mainly focuses on the triceps and chest. The additional "L" motion of the exercise allows the muscles to be strained at their extreme ranges of motion. It also requires activation of the internal and external rotation muscles of the shoulder