Shoulders Exercise · Barbell
Biomechanical cues verified by the PlanWorkouts Science Review Board under CSCS editorial oversight; see our editorial standards.
The Barbell Seated Behind Head Military Press is a compound shoulders movement designed to train the Delts with direct engagement of the Upper Back.
Frontal/sagittal plane vertical press requiring shoulder abduction/flexion and scapular upward rotation. Demands thoracic extension and core rigidity to prevent lower back hyperextension under load. Executing this with strict form maximizes muscle fiber recruitment while protecting joint structures.
Quick Exercise Facts
Target Muscle Activation
The seated behind-the-head military press lowers the bar behind the neck rather than in front, a variation that demands more shoulder external rotation and carries a higher injury risk for lifters without adequate mobility. Most coaches today recommend pressing in front of the head instead for similar delt activation with less shoulder strain. If you do use this version, keep the weight conservative and the descent controlled.
How to Do the Barbell Seated Behind Head Military Press
- Sit on a bench, keeping your back straight and feet flat on the floor.
- Take an overhand grip on the bar, hands set a bit wider than shoulder width.
- Lift the bar off the rack and bring it down behind your head to shoulder level.
- Drive the bar upward until your arms lock out fully.
- Bring the bar back down to that same behind-the-head starting point.
- Repeat for your desired repetitions, keeping constant tension on the working muscle throughout.
Recommended Sets & Reps by Training Goal
70–80% 1RM · 90–120s rest
85%+ 1RM · 2–3 min rest (Calc 1RM)
50–60% 1RM · 45–60s rest
Biomechanical & Joint Load Cues
Frontal/sagittal plane vertical press requiring shoulder abduction/flexion and scapular upward rotation. Demands thoracic extension and core rigidity to prevent lower back hyperextension under load.
Common Mechanical Mistakes & Form Errors to Avoid
- Lumbar Hyperextension (Arching Back): Arching the lower back to compensate for limited shoulder mobility turns a vertical press into an incline press and compresses lumbar facets.
- Pressing Forward Around the Head: Pushing the bar in a wide forward arc rather than pulling the chin back to allow a straight vertical bar path over midfoot.
- Soft Core & Glute Engagement: Failing to aggressively squeeze glutes and brace the abdominal wall causes energy leaks and unstable overhead lockout.
Proper Breathing Patterns & Core Engagement
Brace abdominal wall prior to press. Inhale at collarbone level; press vertically while exhaling as arms lock overhead.
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Injury Modification & Joint Safety
Individuals with limited shoulder flexion mobility or active rotator cuff tendinopathy should utilize landmine presses or high-incline dumbbell presses. If joint irritation persists, immediately stop and substitute this movement with another exercise from the Shoulders exercises category.
Muscles Worked
The Barbell Seated Behind Head Military Press primarily targets the Delts, with Triceps as the primary synergist muscle group, along with the Upper Back.
More Shoulders Exercises
Band Front Lateral Raise
Band Front Raise
Band Reverse Fly
Band Shoulder Press
Band Standing Rear Delt Row
Band Twisting Overhead Press
More Delts Exercises
Band Y-Raise
Barbell Front Raise
Barbell One Arm Snatch
Barbell Rear Delt Raise
Barbell Rear Delt Row
Barbell Seated Bradford Rocky Press
Equipment Alternatives
Don't have barbell? These target the same delts with different equipment.
FAQ
- What muscles does the Barbell Seated Behind Head Military Press work?
- The Barbell Seated Behind Head Military Press primarily targets the delts as the primary agonist. Synergist assistance is provided by the triceps along with the upper back. Maintaining strict biomechanical alignment ensures maximal tension remains focused on the intended muscle fibers rather than shifting to surrounding stabilizer joints.
- What equipment do I need for the Barbell Seated Behind Head Military Press?
- The Barbell Seated Behind Head Military Press is performed using a barbell. Ensure all equipment is securely positioned with collars or safety pins locked before loading working sets. If you train in a home gym or minimal setup, explore our equipment-free and resistance band alternatives below.
- What is the most common form mistake on the Barbell Seated Behind Head Military Press?
- The most frequent error is lumbar hyperextension (arching back): Arching the lower back to compensate for limited shoulder mobility turns a vertical press into an incline press and compresses lumbar facets.. Controlling the 2 to 3-second eccentric lowering phase ensures maximal hypertrophic stimulus while shielding connective tissue.
- How many sets and reps should I perform on the Barbell Seated Behind Head Military Press?
- For muscle hypertrophy and size, aim for 3 to 4 working sets of 8 to 12 repetitions at 70% to 80% of your 1RM with 90 to 120 seconds rest. For absolute strength development, prioritize 4 to 5 sets of 3 to 6 heavier reps with 2 to 3 minutes rest.
- What's a good alternative to the Barbell Seated Behind Head Military Press?
- If you don't have access to a barbell, the Left Hook. Boxing targets the same delts using body weight instead. This alternative replicates the same joint angle and movement plane while allowing you to train effectively with different available gear. You can also substitute it seamlessly in our free Workout Plan Builder.