Ab Work Out these two exercises are much better than crunches and ab machines for several reasons. First they produce much better results than what the so-called new breed of exercises produce, second they can be done anywhere at home, in the gym, and some times at work.
This video below proves this..
Step 1: Lie face up on the floor.
Step 2: Bend your knees so that your feet are flat on the floor.
Step 3: Place hands behind head
Place your hands on the back of your head with your elbows out
to the side. Lace your fingers behind your head.
4: Lift upper body off the ground
In one motion, squeeze your stomach muscles, lift your shoulders
off the floor, and bring your torso upright while keeping your
neck straight and your elbows out.
Do Not Pull On Your Neck while pulling yourself up..
Complete 3 sets of these situps, each set do as many as can
do and take a one minute rest between each set.
Do as many as you can of these sit ups.
3 sets of 25 reps one minute break between each set
30 second video below on how to do these properly.