Muscle outlines from Body Muscles by Ivan Vulović, Apache 2.0 — regrouped and recoloured for Muscle Train.
Supine on bench or floor, knees bent feet planted. Hold kettlebell one hand, straight wrist palm forward. Press overhead above chest, lock elbow with bell against forearm. Lower slow to chest, elbow 45° from torso, control for stabilizers. Press straight back up exhaling. Switch arms after reps.
Tight core (no twist/arch). Stable secure grip. Controlled lower/lift. Inhale lower, exhale press. Scapulae retracted vs bench/floor. Neutral back. Proper pace.
MuscleTrain is actively being built. If something looks broken, or you have a suggestion, let us know — it really helps shape the app.