Set a bar up in a squat rack that is slightly above your head. Sit against a bench in the squat rack. With palms forward, grip the barbell just outside of shoulder width apart.
Lift the bar with arms locked and bring it to nearly shoulder level just in front of your head.
Take a deep breath and lower the bar down to shoulder height at a slow pace.
Press the bar back up to the starting stance while breathing out.
Seated Barbell Shoulder Press Tips
If you are a beginner, have a spotter stand behind you and/or start with a lighter weight.
Inhale as you lower and exhale as you lift the weight up