Start standing. Step one leg sideways away from your centre – lets use our right leg as an example. Bend into the right leg keeping that knee facing forward, while straightening the left leg and turning that knee to the sky (cossack squat). Transfer the weight back into the left leg and send the right leg behind the body to the left side at a diagonal squatting into both legs (curtsy lunge). For both squatting/lunging positions the chest should be kept tall and the hips sent back. If you are able to keep the travelling leg off the ground during the transitions you will increase the challenge on your standing leg.