Muscle outlines from Body Muscles by Ivan Vulović, Apache 2.0 — regrouped and recoloured for Muscle Train.
Lift legs slightly, keeping knees straight. Tuck knees towards your chest, engaging your core. Extend legs fully without touching the floor. Repeat in a continuous rhythm.
To protect your lower back, focus on maintaining contact with the floor throughout the exercise, actively pressing your spine downwards. Control the leg extension to avoid momentum and ensure you're working your targeted muscles, rather than simply relying on swinging. Prevent your feet from touching the floor during the extension phase to maintain consistent tension and maximize muscle engagement. Engage your core muscles throughout the movement by drawing your belly button towards your spine to stabilize your torso and prevent lower back strain.
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