Perform a standard squat by bending your knees and lowering your body until your thighs are parallel to the floor, keeping your chest up and your core engaged.
As you rise back up, explosively jump straight up in the air with as much force as you can, extending your legs and pushing the floor away from you.
Upon landing, immediately step back with one foot and lower your body into a rear lunge position, making sure your front knee is stacked over your ankle and your back knee hovers just above the floor.
Push through your front foot to return to standing, then repeat the movement with your other leg, alternating legs for each rep.