Single-Arm Lateral Raise

Diagram showing a man performing a single lateral raise. The image has two parts: the 'Start' position where he is holding weights at his sides, and the 'Finish' position with arms extended outward, highlighting the deltoid muscles worked.

Exercise Description

The Single-Arm Lateral Raise is an isolation exercise that targets the lateral deltoid one arm at a time. Training each side independently helps improve muscular balance, coordination, and mind-muscle connection while allowing greater focus on proper movement mechanics. This exercise is highly effective for developing shoulder width and creating balanced shoulder development.

Primary Muscles Worked

  • Lateral Deltoids (Side Shoulders)

Secondary Muscles Worked

  • Anterior Deltoids (Front Shoulders)

  • Posterior Deltoids (Rear Shoulders)

  • Supraspinatus

  • Upper Trapezius

  • Rotator Cuff Muscles (Stabilizers)

  • Obliques

  • Core Muscles (Stabilization)

How to Perform Correctly

Setup

  1. Stand upright holding a dumbbell in one hand at your side.

  2. Place your feet shoulder-width apart for stability.

  3. Keep a slight bend in the working arm’s elbow.

  4. Engage your core and maintain a neutral spine.

  5. Allow the non-working arm to rest naturally at your side or hold onto a stable object for support.

Movement

  1. Raise the dumbbell out to the side in a controlled arc.

  2. Lead the movement with your elbow rather than your hand.

  3. Lift the weight until your arm reaches approximately shoulder height.

  4. Pause briefly at the top position.

  5. Slowly lower the dumbbell back to the starting position.

  6. Complete all repetitions on one side before switching arms, or alternate sides as desired.

Common Mistakes to Avoid

Using Excessive Weight

  • Heavy weights often lead to poor form and increased involvement of the trapezius muscles.

Swinging the Body

  • Avoid using momentum or leaning to lift the weight.

Shrugging the Shoulder

  • Keep the working shoulder down and away from the ear throughout the movement.

Raising the Arm Too High

  • Lifting significantly above shoulder height may place unnecessary stress on the shoulder joint.

Straightening the Elbow Completely

  • Maintain a slight bend in the elbow to reduce joint stress.

Dropping the Weight Quickly

  • Control the lowering phase to maximize muscle activation.

Rotating the Torso

  • Keep your body stable and avoid twisting during the exercise.

Shoulder Exercises