Muscle outlines from Body Muscles by Ivan Vulović, Apache 2.0 — regrouped and recoloured for Muscle Train.
Sit on a bench with a straight back, feet flat. Place hands for support. Engage your core, lift legs straight or slightly bent until parallel to the floor. Briefly hold, squeezing your lower abs. Slowly lower legs back down.
Maintain a straight back, avoid leaning back. Control movements, don't rush. Exhale on lift, inhale on lower. Bend knees if needed. Increase difficulty with weight or ankle weights. Keep shoulders relaxed.
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