Lie on your front with your toes on the floor.
Place your hands on the floor by your shoulders and push yourself up, lifting your torso and knees.
Hold a neutral line from the back of your head to your heels, driving your hands into the floor so that your shoulder blades flatten on your back.
Maintaining this control, bring one knee in towards your chest.
Move this leg back to the starting position and repeat.
Keep your buttocks squeezed and your hips level throughout this movement.
