Toes to Bar is an exercise that is designed to strengthen the upper abdominals as well as the hip flexors. This exercise is becoming increasingly popular in the CrossFit realm. In order to facilitate a smoother movement and to perform this exercise with utmost efficiency, ensure that you possess ample flexibility in the pike position. The more flexibility you possess in the pike, the less strain you will be placing on the glutes and hamstrings. Scale by performing knees to elbows.