Lay prone on the ground and come into a high plank position - hands under shoulders, legs straight, both feet on sliders, eye gaze forward slightly
Drive your left knee towards your chest shifting your body weight into your hands and bringing the slider forward underneath your foot- this is your start position
As you return your left leg to plank, drive your right knee towards your chest doing the same with the slider under the foot- this is your end position
Return to start position, repeat for desired number of reps