Primary Muscles
Lateral deltoid (mid shoulder)
Side delt (lateral deltoid) isolation — the key to wide shoulders and the V-taper silhouette.
3D animation — watch the full movement
Lateral deltoid (mid shoulder)
Trapezius (upper fibres), supraspinatus (rotator cuff), anterior deltoid
Pair of dumbbells (2-8 kg / 5-20 lb to start — start MUCH lighter than bicep curls)
Home / Gym
Beginner (for form)
The lateral delt is small. Don't expect anything close to bench press or OHP loads. Form-focused 5-8 kg gives a perfect pump. Reps and form, not weight.
Cable gives constant tension through the ROM — slightly higher activation. But dumbbells are more practical and functional. Ideal: 2 weekly dumbbell sets + 1 cable set rotated.
Yes — specifically the mid delt, which widens the shoulder. Bench press hits the front delt, lateral raise the side, rear delt fly the rear. All three belong in a program.
Sets, reps, rest and weekly progression tailored to your profile.