Instructions:

1. Start by standing with your feet shoulder-width apart and holding the barbell with an overhand grip.
2. Raise the barbell above your head, fully extending your arms.
3. Keeping your upper arms close to your head, slowly lower the barbell behind your head by bending your elbows.
4. Pause for a moment, then extend your arms back to the starting position.
5. Repeat for the desired number of repetitions.