Muscle outlines from Body Muscles by Ivan Vulović, Apache 2.0 — regrouped and recoloured for Muscle Train.
Brace your core, lift arms forward to shoulder height while exhaling, pause and squeeze deltoids, then slowly lower arms as you inhale.
To maximize front delt engagement, initiate the movement by leading with your elbows, ensuring your arm muscles are doing the work. Maintaining a tight core throughout the exercise will stabilize your body and prevent lower back strain, so actively draw your navel towards your spine. Avoid swinging your torso to generate momentum, as this shifts the focus away from your shoulders and can compromise your form. A slight bend in your elbows throughout the movement helps to protect your joints and allows for a more controlled and deliberate execution.
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