This
is a great exercise aimed at your lower-abs which can be performed either on the floor or on a bench. Primary muscles used in this exercise are the lower-abs. Secondary muscles used in this exercise are the upper-abs
and the obliques.
To
perform lay down on either the floor or on a bench and place your hands by your side or under your buttock. From this position lift your head and shoulders slightly off the floor or bench. With your knees slightly bent raise your legs off the floor making sure to keep the tension on your lower abs. Try not to lift your legs too high as to not release the tension from your abs. Lower your legs down slowly in a controlled manner. Do not place your feet on the floor, keep them above the ground. Repeat the process.