Facing the floor on all fours, with your forearms resting on the floor and knees under hips, press up onto your toes so your knees hover floor about an inch.
Lift your right leg off floor keeping it in a bent position and put your weight onto your left forearm, resting your right palm on the floor.
Extend right leg behind you as high up as you can, bending knee sightly and pointing toes. (Keep left knee lifted of floor throughout).
Return right knee back into a tucked position and repeat for 20 seconds. Continue on left side for 20 seconds.