Muscles targeted
Lower abdominal

Starting position
Lie down with your back pressed flat to the floor and your hands under your buttocks, palms down.

Movement
Lift your legs approx. 30 cm off the floor and hold the position. Use just your lower abdominal muscles to raise your legs by another few centimetres. Make sure your knees are slightly bent as you raise them. Bring your legs back to a height of 30 cm; hold, then raise again.

Repeat the exercise 20 times slowly. You should feel your abdominal tensing as you do this exercise.