Reverse crunches
Lie supine on an incline bench holding onto the top of the bench. Bring the legs up with the knees bent. Continue to bring the knees up towards the chest and return to...

Reverse trunk twist
Lie supine on a mat on the floor, placing arms out at right angles to the torso to act as supports. Lift legs up until they form right angles to the body at the hips. Lower...

Ab crunches
Lie supine on a mat on the floor with the legs elevated and resting over a bench so that the knees are at a right angle. Place the arms crossed in front of the chest or place...