Target Muscle Groups: This exercise targets your abdominals and obliques.
Perfect Your Posture: Keep your chin up and your shoulder blades off the ground.
The Action: Lie flat on the floor with your lower back pressed to the ground and contract your abs.With your hands
gently holding your head, lift your knees to about a 45 degree angle. Slowly, at first, go through a bicycle pedal motion.
Alternately touch your elbows to the opposite knees as you twist back and forth.