Muscle outlines from Body Muscles by Ivan Vulović, Apache 2.0 — regrouped and recoloured for Muscle Train.
Hang from a pull-up bar with a shoulder-width overhand grip. Engage your core and swing legs back slightly. Lift legs, aiming to touch the bar with your toes. Maintain control, avoid excessive swinging. Lower legs slowly. Repeat.
Secure grip. Engage your core. Avoid momentum. If needed, raise knees instead of toes. Exhale on lift, inhale on lower. Keep shoulders engaged.
MuscleTrain is actively being built. If something looks broken, or you have a suggestion, let us know — it really helps shape the app.