Muscle outlines from Body Muscles by Ivan Vulović, Apache 2.0 — regrouped and recoloured for Muscle Train.
Adjust the preacher curl machine so your upper arm rests comfortably on the pad. Select a weight. Sit, positioning your armpit snug against the pad. Grip the handle with an underhand grip. Keep your back straight and feet flat. Slowly curl the handle upwards, contracting your bicep and keeping your upper arm stationary. Pause at the top. Slowly lower the handle, fully extending your arm without locking the elbow. Repeat.
Use a full range of motion. Avoid momentum; control the entire movement. Keep your shoulder stable on the pad. Start with a lighter weight to perfect form. Maintain a straight wrist. Exhale on the lift, inhale on the lower.
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