The lateral deltoid is the one of the three heads of the deltoid muscle. When it is developed, your shoulders appear much broader and more "capped." It functions to raise your arms up at your sides.
On this page, you can find all information you'd want about this muscle. Learn its anatomy, view pictures and discover the best exercises for training it.
Use the table of contents (TOC) on the right to easily navigate through this guide.
Outer deltoid (delt)Outer shoulderSide deltoid (delt)Side shoulderOrigin
Lateral portion of the acromionInsertion
Lateral portion of the deltoidFunction
Shoulder abductionTransverse shoulder abductionShoulder flexion^ up to TOCBarbell
Dumbbell
Cable
Cable Lateral RaiseCable Upright RowMachine
Machine Lateral RaiseBarbell-Machine Upright RowStretch
Fixed Bar StretchSide Deltoid Stretch^ up to TOC^ up to TOC^Top of Page
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