Performing the: A Step-by-Step Tutorial Smith Standing Behind Head Military Press
Reach up and grasp the barbell with an overhand grip, hands slightly wider than shoulder-width apart, and unhook it from the rack.
Lower the barbell down behind your head until it's about level with your ears, ensuring that your elbows are bent at a 90-degree angle.
Push the barbell back up, extending your arms fully but without locking your elbows, until the bar is directly over your head.
Slowly lower the barbell back down to the starting position behind your head, maintaining control at all times, and repeat for the desired number of repetitions.