Start standing with both feet shoulder-width apart.
Inhale, and keep your left foot on the floor as you lift your right foot up and take a large step out to the right. Don't step out too far to the point where you lose your balance or cannot maintain an upright position with your torso. As you plant your right foot on the floor, bend your right knee, ensuring that your left leg remains straight.
On an exhale, extend your right knee and transfer your weight onto your left foot. Step your right foot inwards to return to the starting position.
Inhale, keeping your right foot on the floor, lift up your left foot take a large step out to the left. As you plant your foot on the floor, bend your left knee, ensuring that your right leg remains straight.
On an exhale, extend your left knee and transfer your weight onto your right foot. Step your left foot inwards to return to the starting position.
This counts as two reps.
Continue alternating between left and right sides.
Repeat for a total of 50 seconds, followed by 10 seconds of rest.