Muscle outlines from Body Muscles by Ivan Vulović, Apache 2.0 — regrouped and recoloured for Muscle Train.
Feet hip-width toes out, kettlebell in front. Squat grip one-handed (chest up/neutral back/arm straight), abs braced/inhale. Hike bell between legs. Explode hips forward to swing chest-high (arm straight/exhale top). Guide fall back between legs (neutral back). Inhale, reverse to forward swing. Switch hands.
No arm lift: Hip momentum only (forceful extension post-hike). Hip hinge > squat: Minimal knee bend, video check. Chest height max (heavier bell if overshooting). No low back arch/hyperextension: Abs braced at top lockout. Arm straight (tricep flex, posterior chain drive). No back rounding: Abs/erectors tight; master hinge first. Breathe: Inhale back-swing, exhale forceful hip drive/top.
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