The hyperextension

The hyperextension 
Stengthens and develops lower back, hamstrings and abs 
Position

1. Place your legs and hips downwards on the apparatus with your body turned around facing the floor.

2. Your upper body should be free to rise up and down. Either place your hands behind your head or in front of your body in a crossed position.

Execution 
1. Lower the trunk of your body towards the floor.

2. Rise until your body is in a straight line. Lower and repeat.