Muscle outlines from Body Muscles by Ivan Vulović, Apache 2.0 — regrouped and recoloured for Muscle Train.
Kneel with big toes touching, knees hip-width apart. Sit back on heels, bend forward, extending arms. Lower torso between thighs, forehead to mat. Arms extended forward (palms down) or alongside (palms up). Hold, breathing deeply.
Tight hips: keep knees closer. Deeper shoulder stretch: extend arms forward. Use a cushion under torso/forehead for support. Knees uncomfortable: place towel behind them.
MuscleTrain is actively being built. If something looks broken, or you have a suggestion, let us know — it really helps shape the app.