To perform a push press, start by standing with your feet shoulder-width apart and holding a barbell at shoulder height with an overhand grip. Engage your core and dip slightly by bending your knees. Explosively extend your knees and hips while pressing the barbell overhead until your arms are fully extended. Lower the barbell back to shoulder height in a controlled manner. Repeat for the desired number of repetitions, focusing on using your legs to generate power and maintaining proper form throughout the exercise.