Stand up straight with your feet hips width apart.
Bend your elbows with your arms by your side.
Step out to one side, taking your weight over, and kick your other foot behind you towards your buttock.
As you kick your foot up, move your elbows back.
Bring this foot back down and then repeat again on the same side for the specified amount.
Change to the other leg and repeat again for the same amount.
Keep your core strong throughout and your gaze ahead.
Your stance leg can be slightly bent.