Lateral Raises: How to Actually Build Wide Shoulders

By Zerxus Team  |  Exercise Guides

If you want wider shoulders — the kind that create a broad, V-shaped silhouette — lateral raises are the exercise that delivers it. The medial deltoid (side head of the shoulder) is the primary muscle responsible for shoulder width, and pressing movements do not train it effectively. Here is how to do lateral raises correctly and use them to build the shoulders you want.

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Why Lateral Raises Are Essential for Shoulder Width

The deltoid has three heads: front (anterior), side (medial), and rear (posterior). Pressing movements (bench press, overhead press) primarily train the anterior deltoid. The medial deltoid — responsible for the rounded, wide shoulder appearance — is only directly recruited during abduction (raising the arm out to the side). Without lateral raises, the medial deltoid remains systematically undertrained regardless of how much pressing you do.

Lateral Raise Technique: Getting It Right

Grip and Starting Position

Hold dumbbells at your sides with a neutral grip. Stand tall, slight forward lean (10–20 degrees) — this positions the medial deltoid to receive maximum stimulus throughout the range. Bend elbows slightly (10–15 degrees) and maintain this angle throughout the movement — do not let the arm fully straighten or dramatically bend.

The Raise

Raise your arms out to the sides until they reach shoulder height (parallel to the floor). Think of pouring water from a jug — tilt the pinky side slightly higher than the thumb side at the top. This internal rotation maximises medial deltoid engagement. Do not raise above shoulder height — above parallel shifts to the trapezius and risks shoulder impingement.

The Lowering Phase

Lower the weight slowly — 2–3 seconds. The medial deltoid receives significant stimulus during the eccentric (lowering) phase. Dropping the weight quickly eliminates this and reduces the training effect by up to 40%.

Common Lateral Raise Mistakes

• Using too much weight: The medial deltoid is a relatively small muscle — 5–10kg is appropriate for most people. Heavy weights lead to swinging, shrugging the traps, and removing tension from the target muscle
• Shrugging the traps: Keep your traps down and relaxed throughout. If they are rising, the weight is too heavy
• Raising above parallel: Stops targeting the delt and creates shoulder impingement risk
• Dropping the weight too fast: Eliminates the eccentric stimulus — control the descent

Lateral Raise Variations

• Cable lateral raise: Constant tension throughout the movement — the cable maintains load even at the bottom where dumbbells are nearly unloaded. Excellent for medial delt development
• Leaning lateral raise: Hold a rack with one hand and lean away — this increases the range of motion and stretch at the bottom. Highly effective but requires coordination
• Machine lateral raise: Consistent loading, easy to reach failure safely — excellent for high-rep finishing work

Programming Lateral Raises

8–16 sets per week for the medial deltoid (including compound contributions from presses). 3–4 sets of 15–25 reps, 2–3 times per week. The medial deltoid responds well to higher rep ranges and high frequency. Apply progressive overload — even adding 0.5kg every few weeks over months produces significant development.

Frequently Asked Questions

How heavy should lateral raises be?

Much lighter than most people expect. 5–12kg is appropriate for most intermediate lifters doing full-range, controlled reps. If you need to swing your body to lift the weight, it is too heavy. Reduce the load, own the movement, and add weight incrementally over months.

Should I do lateral raises on push days or shoulder days?

On push days (if using a PPL split) or on any upper body day. Include them 2–3 times per week for maximum medial delt development. They are easy to recover from and benefit from frequency — daily lateral raises (with reasonable volume per session) is a viable approach used by many advanced lifters.

How long until I see wider shoulders from lateral raises?

8–16 weeks of consistent, progressive lateral raise training typically produces noticeable changes in shoulder width for those who have been neglecting the medial deltoid. Significant development takes 6–12 months. Keep volume high (15+ sets/week), keep reps high (15–25), and keep progressing.

Zerxus Coaching Team

Certified Strength & Conditioning Coaches

The Zerxus coaching team combines qualified personal trainers, certified strength coaches, and evidence-based sports science to build programmes that actually work. Every article is grounded in peer-reviewed research and practical coaching experience — no fads, no shortcuts.