FormTwin › Exercises › Chin-Up

What muscles does the Chin-Up work?

The chin-up is a bodyweight pull with palms facing you — it hammers the biceps hard while still building a strong, wide back.

Primary muscles worked

Secondary muscles worked

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How to do the Chin-Up

  1. Grip the bar shoulder-width, palms facing you.
  2. Start from a full dead hang.
  3. Pull your chest to the bar, driving your elbows down.
  4. Lower under control to a full hang.

Common mistakes

Variations

Pull-up (overhand)Neutral-grip chin-upAssisted chin-up

Frequently asked questions

What muscles do chin-ups work?

Chin-ups work the lats and biceps as the main movers, with the rhomboids, rear delts and forearms assisting. The underhand grip recruits the biceps more than a pull-up does.

Chin-up vs pull-up — which builds bigger biceps?

The chin-up. Its underhand grip puts the biceps in a stronger line of pull, so it's genuinely one of the best biceps exercises, while still building the back.

Are chin-ups easier than pull-ups?

For most people, yes — the biceps contribute more, so chin-ups usually feel a little easier. They're a great stepping stone toward strict pull-ups.

Related exercises

DeadliftBack SquatBench PressPull-UpPush-Up

This guide is general fitness information, not medical advice. Muscle involvement varies with form, grip and individual anatomy. Consult a professional before starting a new program.