MUSCLES ENGAGED Obliques Many people put a lot of focus on working their abs but forget their surrounding neighbors; the oblique muscles. Obliques serve as stabilizers, and are used in almost every physical activity. Exercising your obliques should be a very important part of your workout program. Glutes Gluteal Muscles (Glutes) are one of the strongest muscles in the body and are the connecting point between your legs and back muscles. Glutes are used in a variety of actions from moving the leg to extending and rotating the hip, as well as extending and rotating the trunk of the body. Exercise Instructions Step 1 Start off lying on your side with your bottom arm laid out beside you, your other arm behind you neck and your feet stacked one on top of the other. Step 2 Crunch up towards your hip and raise your leg up at the same time and fully contract your obliques. Step 3 Lower your upper body and leg back to the starting position and repeat.