Use these two exercises as a progression from the ab wheel. The videos don't do them justice. You've got to try them to understand it.
Keep these in a low to moderate rep range, multiple sets of 5-8 reps. Going high rep on them can make the low back kick in. But you've been warned: This will leave even veteran lifters shaking like a leaf on a tree.
Between working 40-60 hours per week, carting the kids around, or being forced to take those swing dancing lessons you promised your girlfriend (we've all been there), the last thing on the "to do list" is going to the gym. Mr. G has the answer: the Two-Day Workout.
When many of us think of perfect physiques, we think of those belonging to Golden Age bodybuilders. These champions of the past were muscular, strong, healthy, and athletic. It's cliche but it's true: women wanted them; men wanted to be them.