Hyperextensions work your lower back, glutes and hip
extensors.
Position yourself so that with your legs
straight, just your hips are on the pad. Bend your
upper body down as far as possible and then extend
back up to a horizontal to the floor position.
Do not
"hyperextend" the back past a horizontal position as
this places undue stress on the back. Weight can be
added by placing a bar behind the neck, holding weight
in the arms or by adding bands.