Muscle outlines from Body Muscles by Ivan Vulović, Apache 2.0 — regrouped and recoloured for Muscle Train.
Hang from a pull-up bar with an overhand grip, shoulder-width apart. Engage your core, lift legs to a 90-degree angle (L-shape). Slowly rotate legs to one side, keeping them straight, until parallel to the ground. Pause briefly, maintaining core tension. Return to center, controlled. Repeat on the opposite side. Complete desired repetitions, balanced on both sides.
Secure grip is essential. Control movements to maximize core engagement. Keep shoulders engaged; avoid swinging. Breathe steadily, exhale during rotation. Bend knees if needed. Start with fewer reps, increase gradually.
MuscleTrain is actively being built. If something looks broken, or you have a suggestion, let us know — it really helps shape the app.