1
Stand with feet hip-width apart, arms positioned behind head with elbows bent, maintain upright torso posture with neutral spine alignment
2
Engage core muscles and prepare for explosive vertical movement by slightly bending knees in athletic stance, keep hands behind head throughout movement
3
Lower body by bending knees and hips, descending into a quarter to half squat position, controlling the descent with quadriceps engagement
4
Explosively extend hips and knees simultaneously to drive body upward off ground, achieving vertical jump height, land softly by returning to starting position with bent knees to absorb impact