Muscle outlines from Body Muscles by Ivan Vulović, Apache 2.0 — regrouped and recoloured for Muscle Train.
Place both hands on the floor and bend the elbows to wedge them against the abdomen and lower ribs. Lean forward over the hands until the feet leave the ground, then extend the body into a horizontal line. Hold, then step down.
Set the elbows on the abdomen, not the hip bone. Lean far enough forward to counterbalance the legs. Look slightly ahead to stay level.
MuscleTrain is actively being built. If something looks broken, or you have a suggestion, let us know — it really helps shape the app.