Muscle outlines from Body Muscles by Ivan Vulović, Apache 2.0 — regrouped and recoloured for Muscle Train.
Adjust seat so handles are at chest level. Sit with feet flat, shoulder-width apart. Grasp handles with a neutral grip. Keep back against seat, engage core. Extend arms fully, pause, then slowly return with control. Repeat.
Ensure proper seat adjustment. Maintain neutral wrists. Control movement throughout. Avoid elbow lockout. Engage core. Exhale on press, inhale on return.
MuscleTrain is actively being built. If something looks broken, or you have a suggestion, let us know — it really helps shape the app.