Place a barbell with weights on the ground. Stand behind the barbell with your feet roughly shoulder width apart.
Using an overhand grip, grasp the barbell. Your grip should be just slightly wider than shoulder width. Bring the bar up so it is resting on your upper chest. Keep your torso tight and your head back.
Next, dip your body slightly by bending your knees and hips just a bit. Explode upwards driving the barbell up off your shoulders over your head. Your arms should be almost fully extended. Pause for a one count, carefully lower the barbell to your chest and repeat.