Muscle outlines from Body Muscles by Ivan Vulović, Apache 2.0 — regrouped and recoloured for Muscle Train.
Lie on your back, legs extended, holding a dumbbell between your feet. Engage your core, lift one leg towards the ceiling, keeping the other leg flat. Pause, then slowly lower without touching the ground. Repeat on both legs.
Maintain lower back contact with the mat. Control the movement, avoid momentum. Keep your core engaged. Start with a lighter dumbbell if needed. Exhale on lift, inhale on lower.
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