How to Do Lateral Raises Correctly (And Build Wider Shoulders)

Wide shoulders are one of the most universally sought-after physique attributes — they create the V-taper that makes the waist look smaller and the physique look more athletic. The medial (middle) deltoid is the muscle responsible for shoulder width, and lateral raises are its primary isolation exercise. Here's how to actually do them.

Shoulder Anatomy: The Three Deltoid Heads

• •Anterior (front) deltoid: Trained heavily by all pressing movements — bench press, overhead press, cable flyes. Most people already overtrain this head relative to the others
• •Medial (middle) deltoid: Responsible for shoulder width. The only exercises that primarily target this head are lateral raise variations. Largely untrained by pressing movements
• •Posterior (rear) deltoid: Responsible for the rounded, 3D look of the shoulder from the side. Trained by face pulls, reverse flyes, and row variations

Why Most Lateral Raises Are Ineffective

• •Swinging the weight: Using momentum (leaning back, swinging the torso, and using hip drive) to complete the lift removes the load from the deltoid and transfers it to the traps and momentum. The weight is too heavy
• •Shrugging: Elevating the shoulders (shrugging) during the raise means traps are doing significant work instead of the medial deltoid. Keep the shoulders depressed throughout the movement
• •Wrong plane: Raising the arms directly to the side (pure abduction, 90° to the torso) isn't anatomically ideal. The deltoid functions most effectively when the arms are raised slightly in front of the body (about 30° forward of pure lateral) — called 'scaption' or abduction in the plane of the scapula
• •Too much weight: Lateral raises are an isolation exercise that requires high precision. Most people would build more deltoid with 15 lbs for 20 controlled reps than 30 lbs for 10 sloppy reps

Correct Form: Step by Step

• •Starting position: Stand with dumbbells at your sides, slight forward lean from the hips (15–20°), and a slight bend in the elbows throughout the movement
• •Initiation: Lead with the elbow, not the hand. Imagine leading the raise with your upper arm, not trying to raise the dumbbell
• •Peak position: Arms should be roughly parallel to the floor, with thumbs slightly lower than pinkies (internal rotation). This internal rotation places the medial deltoid in its optimal working position
• •Eccentric phase: Lower the weight slowly (3–4 seconds). The eccentric under tension is where most of the growth stimulus occurs — don't drop the weight back down
• •What NOT to do: Don't let the weight rise above shoulder height (traps take over); don't shrug; don't swing

Cable vs. Dumbbell Lateral Raises

• •Cable lateral raise (low pulley): Maintains constant tension throughout the range of motion — including the bottom position where dumbbells have no leverage. The bottom stretched position under load is where hypertrophy stimulus is highest, making cables superior to dumbbells for lateral raises
• •Dumbbell lateral raise: Classic, accessible. The load is zero at the bottom (no tension in the stretched position) and maximum at parallel. Less effective than cables but completely valid when cables aren't available
• •Practical recommendation: Use cables when available. Use dumbbells when not. Both build the medial deltoid effectively with correct form

Programming Lateral Raises

• •Frequency: Shoulders can handle direct training 3–4x per week given their smaller size and faster recovery
• •Volume: 15–20 sets per week of medial deltoid work for optimal development. This can be spread across multiple sessions
• •Rep range: Lateral raises respond well to higher rep ranges (12–25 reps). The medial deltoid has significant slow-twitch fiber composition and responds well to volume and sustained tension
• •Progression: Log your lateral raise weights in YourFit. Progress is slower than on compound lifts — adding 2.5 lbs over several weeks is meaningful progress for isolation work

The Bottom Line

Building wider shoulders requires targeted medial deltoid training — lateral raises done correctly and progressively. Use cables when available, keep the weight controlled (no swinging), lead with the elbows, maintain the slight forward lean, and lower slowly. Training lateral raises 3x per week with 15–20 weekly sets and progressive loading is the approach that actually creates the shoulder width most lifters are after.