Lie on the floor with a barbell or EZ bar behind your head. Here I am using a multi-grip bar. This allows me to use a neutral grip. If you have this bar at your gym, I highly suggest using it. A barbell or EZ bar will work just fine if you don’t have one.
Grab the bar with a shoulder-width grip or narrower.
Use your triceps to lift the bar off the ground. At the end of the movement your arms should be fully extended with the bar straight over your face.
Slowly lower the bar back down to the ground between each repetition.
Do not bounce the bar off the ground. Pause for a second between each repetition.