Stand facing the stairs with your feet just past hip-width apart. Pull your core toward your spine.
Looking straight ahead, bend at both the hips and knees, squatting about halfway down with your knees bent at about 45 degrees. Make sure that your knees remain in line with your toes and keep your back between a 45- to 90-degree angle to your hips.
Swing your arms back and jump forward and up onto the first step. Land lightly in a squat position.
Jump backwards to the floor, again landing softly in your squat position. This counts as one rep.
Continue for eight to 10 reps.
You will perform eight to 10 reps of squat jumps in between each exercise.