Muscle outlines from Body Muscles by Ivan Vulović, Apache 2.0 — regrouped and recoloured for Muscle Train.
Brace your core, flex your spine, and curl your torso towards your knees. Keep arms extended vertically, aligned over your shoulders. Rise until upright, pause, then lower your torso back down with controlled arm extension.
Engage your upper back and actively punch towards the ceiling to maximize the range of motion and fully contract your core muscles. Maintain a locked-out elbow position throughout the entire movement to prevent any strain or injury in your joints. Focus on drawing your ribs down towards your hips to prevent excessive arching in your lower back and maintain spinal stability. Lower your torso slowly and deliberately, resisting the pull of gravity to build strength and control throughout the exercise.
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