Muscle outlines from Body Muscles by Ivan Vulović, Apache 2.0 — regrouped and recoloured for Muscle Train.
From a skin the cat, keep rolling until the body hangs straight below and behind the rings with the arms extended behind the back. Hold the position with the body straight and the shoulders open, then return through the same path.
Enter slowly and never drop into it. Keep a firm grip. Bend the knees to reduce the stretch while you build tolerance.
MuscleTrain is actively being built. If something looks broken, or you have a suggestion, let us know — it really helps shape the app.