
When standing (you get a bonus if your weight is over your left leg!), reach down slightly with your left arm. Think about allowing your left ribcage to move toward your left hip bone. When in this position, you should feel your left abs/obliques turning on. Now, this usually won't feel like you've done 1,000 crunches, but you should feel an awareness that the left abdominals are "on". Hold in this position.