Oblique Crunches (each Side)
When choosing exercises for your abs, the basic pelvic tilt is a great one to start with. This simple, subtle exercise is a great warm-up for your abs and back. This movement actually originates from the hips, rather than from the shoulders as in a crunch. Your upper body will remain stable as you curl the hips towards the ribcage. You should concentrate on the movement to make sure you're using your abs rather than your glutes.