Lie on your back with a cable machine up by your head.
Bend one leg upwards, placing the foot on the floor.
Draw your other leg up to the same position, maintaining a hips width between your legs.
Grab onto the cable machine handle in your hands, with your arms fully extended above your head.
Push through both of your feet to lift your hips up into a bridge position until you have a straight line from your shoulders to your knees.
As you are lifting up, straighten your right leg out in front of you so all your weight is going through your left foot.
Also bring your arms down by your sides taking on the resistance of the cable machine.
This should be one smooth motion.
Lower back down and repeat.
Keep your pelvis level throughout this exercise.