1
Stand upright on a sturdy aerobic step platform with feet hip-width apart, holding dumbbells at sides with neutral grip, shoulders back and core engaged
2
Position feet firmly on the center of the step platform with toes pointing forward, maintain neutral spine and slight forward gaze
3
Lower body by bending knees and hips, stepping down with control toward the floor in a controlled eccentric movement, keeping chest upright and weight in heels
4
Drive through heels to extend knees and hips, stepping back up to starting position on the platform in a powerful concentric movement, squeezing quadriceps at top