PRONE LATERAL RAise

The prone lateral raise is a rear-deltoid isolation exercise performed lying face down on an incline bench while raising dumbbells out to the sides. Supporting the chest on the bench removes any ability to cheat with body momentum, forcing the posterior deltoids, rhomboids, and mid-trapezius to do the work directly. It is one of the more strict, targeted ways to build the rear shoulders and correct the muscle imbalance that leads to rounded-shoulder posture.

Muscles Targeted

• Primary: Posterior deltoids
• Secondary: Rhomboids, middle trapezius
• Tertiary: Infraspinatus, teres minor (rotator cuff)

Starting Position

Set an incline bench to roughly 30-45 degrees and lie face down with your chest and stomach supported against the pad. Let a light dumbbell hang from each hand directly below your shoulders, palms facing each other, with a slight bend in your elbows. Keep your feet planted on the floor or bench base for stability and your neck in a neutral, relaxed position.

Execution Steps

1. Brace against the bench and initiate the movement by leading with your elbows, not your hands
2. Raise both arms out to the sides in a wide arc, maintaining the slight elbow bend throughout
3. Lift until your arms reach roughly shoulder height, keeping the motion in the same plane as your torso
4. Squeeze your shoulder blades together briefly at the top of the movement
5. Lower the dumbbells back down under control to the starting hang position
6. Repeat for the desired number of repetitions without letting the weights swing between reps

Form Cues

• Lead with the elbows: Think of pulling your elbows toward the ceiling rather than lifting the dumbbells with your hands
• Keep it light: This is a strict isolation movement - use a weight you can control with zero swing
• Avoid shrugging: Keep your traps relaxed so the shoulders, not the neck, drive the movement
• Maintain the slight elbow bend throughout to keep tension on the rear delts and off the elbow joint
• Control the descent: Lower the dumbbells slowly rather than letting gravity drop them back down

Common Mistakes

• Using too much weight: Excess load causes the arms to swing and shifts work onto momentum instead of the rear delts. Drop the weight until you can perform the full range of motion strictly.
• Shrugging the shoulders up: improving the shoulders toward the ears recruits the upper traps instead of the rear delts. Keep the shoulders pulled down and back.
• Raising the arms above shoulder height: Lifting too high stresses the rotator cuff without adding rear-delt benefit. Stop the lift at roughly shoulder level.
• Lifting the head off the pad: Craning the neck up to see the weights strains the cervical spine. Keep your face and chest resting on the bench.
• Straightening or over-bending the elbows: A fixed bend should be held throughout; letting the elbows lock out or collapse changes the use and reduces rear-delt tension.

Variations

• Standing bent-over lateral raise: Removes the bench for a version that also challenges lower-back and core stability
• Cable reverse fly: Provides constant tension through the cable rather than the gravity-dependent resistance of dumbbells
• Rear delt machine fly: A guided, highly stable option useful for beginners or high-rep finishing sets
• Single-arm prone lateral raise: Trains one side at a time to address strength imbalances
• Face pull: A rope-based alternative that adds external rotation for more complete rear-shoulder development

Tips for Progression

• Increase weight in small increments (2.5-5 pounds) once you can complete all sets with a strict, controlled range of motion
• Build up reps to 15 per set before adding load
• Add a one-second pause at the top of each rep to increase time under tension
• Slow the eccentric phase to two to three seconds once form is consistent

Training Notes

Include the prone lateral raise in shoulder or upper-body sessions one to two times per week, typically after heavier pressing or pulling work as a rear-delt isolation finisher. Use light weight for 12-15 reps across two to three sets, resting 45-60 seconds between sets. It is particularly useful for lifters whose pressing-heavy programming has left the rear delts and upper back underdeveloped relative to the front shoulders and chest.