Generally speaking, if you have found this site then you probably have
other things to worry about besides have a rock-hard '6-pac' stomach.
However, you certainly can dream and it won't hurt to get started on
those obliques!
Here are the top three abdominal exercises that you can use to help
you flatten your tummy...
1. Bicycle maneuver - Lie flat on the floor with your lower
back pressed to the ground. Put your hands beside your head. Bring your
knees up to about a 45-degree angle and slowly go through a bicycle
pedal motion. Touch your left elbow to your right knee, then your right
elbow to your left knee. Breath evenly throughout the exercise.
2. Captain's chair - This was one of the few on the "most effective"
list that involves gym equipment. Start with legs dangling and slowly
lift your knees in toward your chest. The motion should be controlled
and deliberate as you bring your knees up and return them back to the
starting position.
3. Crunch on an exercise ball - Sit on the exercise ball with
your feet flat on the floor. Let the ball roll back slowly and lie back
until your thighs and torso are parallel with the floor. Contract your
abdominals raising your torso to no more than 45 degrees. To work the
oblique muscles, make the exercise less stable by moving your feet closer
together.