Muscle outlines from Body Muscles by Ivan Vulović, Apache 2.0 — regrouped and recoloured for Muscle Train.
Hang from the rings with straight arms. Pull the knees to the chest and keep rolling backwards, passing the legs between the arms until you hang inverted behind the rings. Pause, then reverse the movement back to the hang.
Go slowly — the shoulders take a deep stretch. Keep the grip firm and the elbows soft. Start tucked and only extend the legs once the range is comfortable.
MuscleTrain is actively being built. If something looks broken, or you have a suggestion, let us know — it really helps shape the app.