Muscle outlines from Body Muscles by Ivan Vulović, Apache 2.0 — regrouped and recoloured for Muscle Train.
Lie on your back, knees bent, feet flat. Hold a weight plate or dumbbell against your chest. Engage your core, exhale, and lift your upper body towards your knees in a controlled curl. Pause, then slowly lower back down, maintaining control.
Keep feet flat for stability. Avoid momentum; focus on core engagement. Start with a lighter weight. Maintain a neutral neck position. Ensure smooth, controlled movements. Reduce weight or reassess form if you feel lower back discomfort.
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