Stand up straight.
Take a large step forwards into a lunge.
Both hips and knees should be at 90 degrees as you lunge down.
Make sure your front knee is directly above your ankle and pointing forwards.
Push up, stepping your back leg to the front leg.
You may touch this foot to the ground, or bring it straight through to repeat the movement, leading with your other leg.
Continue this sequence in a straight line.
